[EDITORIAL NOTE]{.underline}: The reference date is the date of
diagnosis with acute lymphoblastic leukemia (ALL), for a case; for the
individually matched control, it is the reference date of the associated
case. The reference date age is the age of the case or matched control
on his or her reference date.

EMF AND RADON STUDY

SECTION A: [HOUSEHOLD EXPOSURES]{.underline}

I would now like to ask about certain types of electrical appliances you
may have used during your pregnancy with (SUBJECT).

+-----------------+-----------------+-----------------+-----------------+
| A1.             | A2.             | A3.             | A4.             |
|                 |                 |                 |                 |
| During your     | During how many | During          | During          |
| pregnancy with  | months of that  | (that/those)    | (that/those)    |
| (SUBJECT), did  | pregnancy did   | month(s), did   | month(s), how   |
| you use (ITEM)? | you use (ITEM)? | you use         | many minutes or |
|                 | \[Please        | (ITEM)...?      | hours per day   |
|                 | include each    |                 | or week did you |
|                 | month in which  |                 | usually use     |
|                 | you used it at  |                 | (ITEM)?         |
|                 | least once.\]   |                 |                 |
+-----------------+-----------------+-----------------+-----------------+
| a.  A heating   | \|\             | Every day, 1    |                 |
|     pad?        | _\_\_\|\_\_\_\| |                 |                 |
|                 |                 | At least once   |                 |
| > YES 1         | \# MONTHS       |                 |                 |
|                 |                 | a week or 2     |                 |
| NO 2 (A1b)      |                 |                 |                 |
|                 |                 | Less than once  |                 |
|                 |                 |                 |                 |
|                 |                 | a week? 3       |                 |
+-----------------+-----------------+-----------------+-----------------+
| b.  A sewing    | \|\             | Every day, 1    |                 |
|     machine?    | _\_\_\|\_\_\_\| |                 |                 |
|                 |                 | At least once   |                 |
| > YES 1         | \# MONTHS       |                 |                 |
|                 |                 | a week or 2     |                 |
| NO 2 (A1c)      |                 |                 |                 |
|                 |                 | Less than once  |                 |
|                 |                 |                 |                 |
|                 |                 | a week? 3       |                 |
+-----------------+-----------------+-----------------+-----------------+
| c.  A hair      | \|\             | Every day, 1    |                 |
|     dryer at    | _\_\_\|\_\_\_\| |                 |                 |
|     home or in  |                 | At least once   |                 |
|     a beauty    | \# MONTHS       |                 |                 |
|     salon?      |                 | a week or 2     |                 |
|                 |                 |                 |                 |
| > YES 1         |                 | Less than once  |                 |
|                 |                 |                 |                 |
| NO 2 (A1d)      |                 | a week? 3       |                 |
+-----------------+-----------------+-----------------+-----------------+
| d.  A curling   | \|\             | Every day, 1    |                 |
|     iron at     | _\_\_\|\_\_\_\| |                 |                 |
|     home or in  |                 | At least once   |                 |
|     a beauty    | \# MONTHS       |                 |                 |
|     salon?      |                 | a week or 2     |                 |
|                 |                 |                 |                 |
| > YES 1         |                 | Less than once  |                 |
|                 |                 |                 |                 |
| NO 2 (A1e)      |                 | a week? 3       |                 |
+-----------------+-----------------+-----------------+-----------------+
| e.  An electric | \|\             | Every day, 1    |                 |
|     ceiling     | _\_\_\|\_\_\_\| |                 |                 |
|     fan?        |                 | At least once   |                 |
|                 | \# MONTHS       |                 |                 |
| YES 1           |                 | a week or 2     |                 |
|                 |                 |                 |                 |
| NO 2 (A1f)      |                 | Less than once  |                 |
|                 |                 |                 |                 |
|                 |                 | a week? 3       |                 |
+-----------------+-----------------+-----------------+-----------------+

+------------------------------+---------------------------------------+
| A5.                          | A6.                                   |
|                              |                                       |
| When you used (ITEM), did    | \[ONLY ASK IF \# MONTHS IN A2 \< 7\]: |
| you usually turn down the    |                                       |
| heat in your home while you  | When you used (ITEM), did you use it  |
| were sleeping?               | during your...(CIRCLE ALL THAT APPLY) |
+------------------------------+---------------------------------------+
|                              | a.  1st trimester? 1                  |
|                              |                                       |
|                              | b.  2nd trimester? 2                  |
|                              |                                       |
|                              | c.  3rd trimester? 3                  |
+------------------------------+---------------------------------------+
|                              | a.  1st trimester? 1                  |
|                              |                                       |
|                              | b.  2nd trimester? 2                  |
|                              |                                       |
|                              | c.  3rd trimester? 3                  |
+------------------------------+---------------------------------------+
|                              | a.  1st trimester? 1                  |
|                              |                                       |
|                              | b.  2nd trimester? 2                  |
|                              |                                       |
|                              | c.  3rd trimester? 3                  |
+------------------------------+---------------------------------------+
|                              | a.  1st trimester? 1                  |
|                              |                                       |
|                              | b.  2nd trimester? 2                  |
|                              |                                       |
|                              | c.  3rd trimester? 3                  |
+------------------------------+---------------------------------------+
|                              | a.  1st trimester? 1                  |
|                              |                                       |
|                              | b.  2nd trimester? 2                  |
|                              |                                       |
|                              | c.  3rd trimester? 3                  |
+------------------------------+---------------------------------------+

+--------------------+-------------+-----------------+-----------------+
| A1.                | A2.         | A3.             | A4.             |
|                    |             |                 |                 |
| During your        | During how  | During          | During          |
| pregnancy with     | many months | (that/those)    | (that/those)    |
| (SUBJECT), did you | of that     | month(s), did   | month(s), how   |
| use (ITEM)?        | pregnancy   | you use         | many minutes or |
|                    | did you use | (ITEM)...?      | hours per day   |
|                    | (ITEM)?     |                 | or week did you |
|                    | \[Please    |                 | usually use     |
|                    | include     |                 | (ITEM)?         |
|                    | each month  |                 |                 |
|                    | in which    |                 |                 |
|                    | you used it |                 |                 |
|                    | at least    |                 |                 |
|                    | once.\]     |                 |                 |
+--------------------+-------------+-----------------+-----------------+
| f.  A cool-air or  | \|\_\_\     | Every day, 1    |                 |
|     ultrasonic     | _\|\_\_\_\| |                 |                 |
|     room           |             | At least once   |                 |
|     humidifier?    | \# MONTHS   |                 |                 |
|                    |             | a week or 2     |                 |
| YES 1              |             |                 |                 |
|                    |             | Less than once  |                 |
| NO 2 (A1g)         |             |                 |                 |
|                    |             | a week? 3       |                 |
+--------------------+-------------+-----------------+-----------------+
| g.  A sound system | \|\_\_\     | Every day, 1    |                 |
|     while using a  | _\|\_\_\_\| |                 |                 |
|     headset,       |             | At least once   |                 |
|     including a    | \# MONTHS   |                 |                 |
|     portable       |             | a week or 2     |                 |
|     radio, tape    |             |                 |                 |
|     player, CD     |             | Less than once  |                 |
|     player or      |             |                 |                 |
|     stereo?        |             | a week? 3       |                 |
|                    |             |                 |                 |
| YES 1              |             |                 |                 |
|                    |             |                 |                 |
| NO 2 (A1h)         |             |                 |                 |
+--------------------+-------------+-----------------+-----------------+
| h.  A stereo sound | \|\_\_\     | Every day, 1    |                 |
|     system without | _\|\_\_\_\| |                 |                 |
|     using a        |             | At least once   |                 |
|     headset?       | \# MONTHS   |                 |                 |
|                    |             | a week or 2     |                 |
| YES 1              |             |                 |                 |
|                    |             | Less than once  |                 |
| NO 2 (A1i)         |             |                 |                 |
|                    |             | a week? 3       |                 |
+--------------------+-------------+-----------------+-----------------+
| i.  An electric    | \|\_\_\     | Every day, 1    | \|\_\_\_\|\     |
|     blanket while  | _\|\_\_\_\| |                 | _\_\_\|\_\_\_\| |
|     lying or       |             | At least once   |                 |
|     sleeping in    | \# MONTHS   |                 | \#              |
|     bed?           |             | a week or 2     |                 |
|                    |             |                 | MINS. 1         |
| YES 1              |             | Less than once  |                 |
|                    |             |                 | HRS. 2          |
| NO 2 (A1j)         |             | a week? 3       |                 |
|                    |             |                 | PER             |
|                    |             |                 |                 |
|                    |             |                 | DAY 1           |
|                    |             |                 |                 |
|                    |             |                 | WK 2            |
+--------------------+-------------+-----------------+-----------------+
| j.  An electric    | \|\_\_\     | Every day, 1    | \|\_\_\_\|\     |
|     mattress pad   | _\|\_\_\_\| |                 | _\_\_\|\_\_\_\| |
|     while lying or |             | At least once   |                 |
|     sleeping in    | \# MONTHS   |                 | \#              |
|     bed?           |             | a week or 2     |                 |
|                    |             |                 | MINS. 1         |
| YES 1              |             | Less than once  |                 |
|                    |             |                 | HRS. 2          |
| NO 2 (A1k)         |             | a week? 3       |                 |
|                    |             |                 | PER             |
|                    |             |                 |                 |
|                    |             |                 | DAY 1           |
|                    |             |                 |                 |
|                    |             |                 | WK 2            |
+--------------------+-------------+-----------------+-----------------+
| k.  An electric    | \|\_\_\     | Every day, 1    | \|\_\_\_\|\     |
|     water bed      | _\|\_\_\_\| |                 | _\_\_\|\_\_\_\| |
|     heater?        |             | At least once   |                 |
|                    | \# MONTHS   |                 | \#              |
| YES 1              |             | a week or 2     |                 |
|                    |             |                 | MINS. 1         |
| NO 2 (A7)          |             | Less than once  |                 |
|                    |             |                 | HRS. 2          |
|                    |             | a week? 3       |                 |
|                    |             |                 | PER             |
|                    |             |                 |                 |
|                    |             |                 | DAY 1           |
|                    |             |                 |                 |
|                    |             |                 | WK 2            |
+--------------------+-------------+-----------------+-----------------+

+------------------------------+---------------------------------------+
| A5.                          | A6.                                   |
|                              |                                       |
| When you used (ITEM), did    | \[ONLY ASK IF \# MONTHS IN A2 \< 7\]: |
| you usually turn down the    |                                       |
| heat in your home while you  | When you used (ITEM), did you use it  |
| were sleeping?               | during your...(CIRCLE ALL THAT APPLY) |
+------------------------------+---------------------------------------+
|                              | a.  1st trimester? 1                  |
|                              |                                       |
|                              | b.  2nd trimester? 2                  |
|                              |                                       |
|                              | c.  3rd trimester? 3                  |
+------------------------------+---------------------------------------+
|                              | a.  1st trimester? 1                  |
|                              |                                       |
|                              | b.  2nd trimester? 2                  |
|                              |                                       |
|                              | c.  3rd trimester? 3                  |
+------------------------------+---------------------------------------+
|                              | a.  1st trimester? 1                  |
|                              |                                       |
|                              | b.  2nd trimester? 2                  |
|                              |                                       |
|                              | c.  3rd trimester? 3                  |
+------------------------------+---------------------------------------+
| YES 1                        | a.  1st trimester? 1                  |
|                              |                                       |
| NO 2                         | b.  2nd trimester? 2                  |
|                              |                                       |
|                              | c.  3rd trimester? 3                  |
+------------------------------+---------------------------------------+
| YES 1                        | a.  1st trimester? 1                  |
|                              |                                       |
| NO 2                         | b.  2nd trimester? 2                  |
|                              |                                       |
|                              | c\. 3rd trimester? 3                  |
+------------------------------+---------------------------------------+
| YES 1                        | a.  1st trimester? 1                  |
|                              |                                       |
| NO 2                         | b.  2nd trimester? 2                  |
|                              |                                       |
|                              | c.  3rd trimester? 3                  |
+------------------------------+---------------------------------------+

A7. During your pregnancy with (SUBJECT), was an electric clock or clock
radio located within 3 feet of where you were sleeping?

YES 1

NO 2 (A9)

A8. Did this clock have a digital or dial display?

DIGITAL 1

DIAL 2

A9. During your pregnancy with (SUBJECT), did you use a microwave oven?

YES 1

NO 2 (A11)

A10. On the average, did you use the microwave oven...

More than once a day, 1

Once a day, 2

At least once a week or 3

Less than once a week? 4

A11. Did you watch TV during your pregnancy with (SUBJECT), that would
be from (\_\_\_ / \_\_\_) to

> MO YR
>
> (\_\_\_ / \_\_\_)? Please include the situations listed on this card
> -- watching TV at your home, watching
>
> MO YR

TV at a friend or relative's home or anywhere else, spending time near a
TV that was turned on, watching videos using a VCR connected to a TV or
playing electronic video games connected to a TV.

**[SHOW CARD A]{.underline}**

YES 1

NO 2 (A25)

A12. Including the situations listed on this card, how many minutes or
hours per day or week did you usually watch TV during your pregnancy
with (SUBJECT)? \[Remember to include weekends.\]

**[SHOW CARD A]{.underline}**

\|\_\_\_\|\_\_\_\|\_\_\_\| MIN 1 PER DAY 1

\# HRS 2 WK 2

MO 3

> BOX A.
>
> A12 IS \< 10 MINUTES PER DAY OR \< 60 MINUTES
>
> PER WEEK OR \< 4 HOURS PER MONTH 1 (A25)
>
> ALL ELSE 2 (INTRO
>
> BEFORE
>
> A13)

Now, I'll be asking you about the television set that you watched **the
most** during your pregnancy with (SUBJECT). Please include the
situations listed on this card when answering these questions.

A13. Was this a black-and-white or color television?

**[SHOW CARD A]{.underline}** BLACK-AND-WHITE 1

COLOR 2

A14. What was the size of the TV screen?

**[SHOW CARD B]{.underline}**

A.  5 INCHES 1

B.  9 INCHES 2

C.  13 INCHES 3 (A16)

D.  19 INCHES 4 (A16)

E.  26 INCHES 5 (A16)

F.  OTHER (SPECIFY) 91 (A15 if \< 9", A16 if \> 9")

A15. While you were watching this TV during your pregnancy, was it more
often powered with batteries or did you usually plug it into an
electrical outlet?

BATTERIES 1

ELECTRICITY 2

OTHER (SPECIFY) 91

A16. To the best of your knowledge, how old was this television at the
time that you were watching it during your pregnancy with (SUBJECT)? Was
it...

Less than 5 years old, 1

5 to 10 years old or 2

More than 10 years old? 3

A17. How many minutes or hours per day or week did you usually watch or
sit near this TV during your pregnancy with (SUBJECT)? \[Remember to
include weekends.\]

\|\_\_\_\|\_\_\_\|\_\_\_\| MIN 1 PER DAY 1

\# HRS 2 WK 2

MO 3

A18. How far did you usually sit from this TV? Was it...

Less than 4 feet, 1

4 to 6 feet or 2

More than 6 feet? 3

> BOX B.
>
> MOST WATCHED TV IN A13 WAS COLOR 1 (A19)
>
> MOST WATCHED TV IN A13 WAS BLACK-AND-WHITE
>
> OR DON'T KNOW 2 (A25)

A19. Including the situations listed on this card, did you watch a
black-and-white television set on a regular basis during your pregnancy
with (SUBJECT)?

**[SHOW CARD A]{.underline}**

YES 1

NO 2 (A25)

A20. What was the size of the TV screen?

**[SHOW CARD B]{.underline}**

> A. 5 INCHES 1
>
> B. 9 INCHES 2
>
> C. 13 INCHES 3 (A22)
>
> D. 19 INCHES 4 (A22)

E.  26 INCHES 5 (A22)

F.  OTHER (SPECIFY) 91 (A21 if \< 9", A22 if \> 9")

A21. While you were watching this TV during your pregnancy, was it more
often powered with batteries or did you usually plug it into an
electrical outlet?

BATTERIES 1

ELECTRICITY 2

OTHER (SPECIFY) 91

A22. To the best of your knowledge, how old was this television at the
time that you were watching it during your pregnancy with (SUBJECT)? Was
it...

Less than 5 years old, 1

5 to 10 years old or 2

More than 10 years old? 3

A23. How many minutes or hours per day or week did you usually watch or
sit near this TV during your pregnancy with (SUBJECT)? \[Remember to
include weekends.\]

\|\_\_\_\|\_\_\_\|\_\_\_\| MIN 1 PER DAY 1

\# HRS 2 WK 2

MO 3

A24. How far did you usually sit from this TV? Was it...

Less than 4 feet, 1

4 to 6 feet or 2

More than 6 feet? 3

A25. Now I would like to ask you some questions about personal
computers. Did you use a personal computer (PC) or computer terminal
with a monitor during your pregnancy with (SUBJECT)? Please include
computers used while at home, work, school or anywhere else.

YES 1

NO 2 (A32)

A26. During your pregnancy, how many minutes or hours per day or week
did you use a computer? Please include the time you spent sitting within
3 feet of a computer while the monitor was on, whether or not you were
actually using it. \[Remember to include weekends.\]

\|\_\_\_\|\_\_\_\|\_\_\_\| MIN 1 PER DAY 1

\# HRS 2 WK 2

MO 3

A27. Did you use more than one computer on a regular basis during your
pregnancy with (SUBJECT)?

YES 1

NO 2 (A28)

\[**READ IF A27 = 1**: Now I'd like to ask you about the computer you
used **the most** during your pregnancy with (SUBJECT).\]

A28. Was the monitor on (the computer you used/this computer) a
monochrome or a color monitor? (By monochrome we mean that only one
color is displayed on the screen, usually white, green or amber on a
black background. With a color monitor, you can select the color that
your screen displays and you can display more than one color at a time.)

MONOCHROME 1

COLOR 2

> BOX C.
>
> A26 IS \< 10 MINUTES PER DAY OR \< 60 MINUTES
>
> PER WEEK OR \< 4 HOURS PER MONTH
>
> OR A27 = 2 (NO OR DON'T KNOW) 1 (A32)
>
> ALL ELSE 2 (A29)

A29. During your pregnancy with (SUBJECT), how many minutes or hours per
day or week did you usually use this computer? Please include the time
you spent sitting within 3 feet of this computer while the monitor was
on, whether or not you were actually using it. \[Remember to include
weekends.\]

\|\_\_\_\|\_\_\_\|\_\_\_\| MIN 1 PER DAY 1

\# HRS 2 WK 2

MO 3

\[**READ ONLY IF A27 = 1**: otherwise skip to intro of A32\]

Now I would like to ask you the same series of questions about the
computer you used **the second most** frequently.

A30. Was the monitor on this computer a monochrome or a color monitor?

MONOCHROME 1

COLOR 2

A31. During your pregnancy with (SUBJECT), how many minutes or hours per
day or week did you usually use this computer? \[Remember to include
weekends.\]

\|\_\_\_\|\_\_\_\|\_\_\_\| MIN 1 PER DAY 1

\# HRS 2 WK 2

MO 3

Now, I would like to ask you about (SUBJECT'S) use of electrical
appliances from (his/her) birth until (REFERENCE DATE, \_\_\_\_/\_\_\_
), either by (himself/herself) or with help.

MO YR

+-------------+--------+----------+---------+-------------------------+
| A32.        | A33.   | A34.     | A35.    | BOX D.                  |
|             |        |          |         |                         |
| \[From      | At     | At what  | When    | INTERVIEWER: SKIP       |
| (SUBJECT'S) | what   | age did  | (S      | ACCORDING TO REFERENCE  |
| birth until | age    | (he/she) | UBJECT) | DATE AGE AND AGES       |
| (REFERENCE  | did    | stop     | used    | SPECIFIED IN A33. AND   |
| DATE,       | (h     | using    | (ITEM), | A34.                    |
| \_\_\_ /    | e/she) | the      | did you |                         |
| \_\_\_ )\], | start  | (ITEM)?  | usually |                         |
| did         | using  |          | turn    |                         |
|             | the    |          | down    |                         |
| MO YR       | (      |          | the     |                         |
|             | ITEM)? |          | heat in |                         |
| (he/she)    |        |          | your    |                         |
| ever use    |        |          | home    |                         |
| (ITEM)?     |        |          | while   |                         |
|             |        |          | (       |                         |
|             |        |          | he/she) |                         |
|             |        |          | was     |                         |
|             |        |          | sl      |                         |
|             |        |          | eeping? |                         |
+-------------+--------+----------+---------+-------------------------+
| a.  An      | \|\_\_ | \|       | YES 1   | AGE STOPPED USING IS    |
|             | \_\|\_ | \_\_\_\| |         | YOUNGER THAN REFERENCE  |
|    electric | \_\_\| | \_\_\_\| | NO 2    | DATE AGE OR DON'T KNOW  |
|     blanket |        |          |         | AGE STARTED             |
|     while   | AGE    | AGE      |         |                         |
|     lying   |        |          |         | OR STOPPED 1 (A32b)     |
|     or      | \< 1   | \< 1     |         |                         |
|             | YE     | YEAR 00  |         | AGE STARTED USING IS    |
|    sleeping | AR..00 |          |         | LESS THAN OR EQUAL TO   |
|     in bed? |        | STILL    |         | REFERENCE DATE AGE AND  |
|             |        | USING 88 |         | STILL USING OR AGE      |
| YES 1       |        |          |         | STOPPED USING IS EQUAL  |
|             |        |          |         | TO OR OLDER THAN        |
| NO 2 (A32b) |        |          |         | REFERENCE DATE AGE 2    |
|             |        |          |         | (A36a)                  |
+-------------+--------+----------+---------+-------------------------+
| b.  An      | \|\_\_ | \|       | YES 1   | AGE STOPPED USING IS    |
|             | \_\|\_ | \_\_\_\| |         | YOUNGER THAN REFERENCE  |
|    electric | \_\_\| | \_\_\_\| | NO 2    | DATE AGE OR DON'T KNOW  |
|             |        |          |         | AGE STARTED             |
|    mattress | AGE    | AGE      |         |                         |
|     pad     |        |          |         | OR STOPPED 1 (A32c)     |
|     while   | \< 1   | \< 1     |         |                         |
|     lying   | YE     | YEAR 00  |         | AGE STARTED USING IS    |
|     or      | AR..00 |          |         | LESS THAN OR EQUAL TO   |
|             |        | STILL    |         | REFERENCE DATE AGE AND  |
|    sleeping |        | USING 88 |         | STILL USING OR AGE      |
|     in bed? |        |          |         | STOPPED USING IS EQUAL  |
|             |        |          |         | TO OR OLDER THAN        |
| YES 1       |        |          |         | REFERENCE DATE AGE 2    |
|             |        |          |         | (A36b)                  |
| NO 2 (A32c) |        |          |         |                         |
+-------------+--------+----------+---------+-------------------------+
| c.  An      | \|\_\_ | \|       | YES 1   | AGE STOPPED USING IS    |
|             | \_\|\_ | \_\_\_\| |         | YOUNGER THAN REFERENCE  |
|    electric | \_\_\| | \_\_\_\| | NO 2    | DATE AGE OR DON'T KNOW  |
|     water   |        |          |         | AGE STARTED             |
|     bed     | AGE    | AGE      |         |                         |
|     heater? |        |          |         | OR STOPPED 1 (A32d)     |
|             | \< 1   | \< 1     |         |                         |
| YES 1       | YE     | YEAR 00  |         | AGE STARTED USING IS    |
|             | AR..00 |          |         | LESS THAN OR EQUAL TO   |
| NO 2 (A32d) |        | STILL    |         | REFERENCE DATE AGE AND  |
|             |        | USING 88 |         | STILL USING OR AGE      |
|             |        |          |         | STOPPED USING IS EQUAL  |
|             |        |          |         | TO OR OLDER THAN        |
|             |        |          |         | REFERENCE DATE AGE 2    |
|             |        |          |         | (A36c)                  |
+-------------+--------+----------+---------+-------------------------+
| d.  A       | \|\_\_ | \|       |         | AGE STOPPED USING IS    |
|             | \_\|\_ | \_\_\_\| |         | YOUNGER THAN REFERENCE  |
|    cool-air | \_\_\| | \_\_\_\| |         | DATE AGE OR DON'T KNOW  |
|     or      |        |          |         | AGE STARTED             |
|             | AGE    | AGE      |         |                         |
|  ultrasonic |        |          |         | OR STOPPED 1 (A32e)     |
|     room    | \< 1   | \< 1     |         |                         |
|             | YE     | YEAR 00  |         | AGE STARTED USING IS    |
| humidifier? | AR..00 |          |         | LESS THAN OR EQUAL TO   |
|             |        | STILL    |         | REFERENCE DATE AGE AND  |
| YES 1       |        | USING 88 |         | STILL USING OR AGE      |
|             |        |          |         | STOPPED USING IS EQUAL  |
| NO 2 (A32e) |        |          |         | TO OR OLDER THAN        |
|             |        |          |         | REFERENCE DATE AGE 2    |
|             |        |          |         | (A36d)                  |
+-------------+--------+----------+---------+-------------------------+

+-----------------------+------------------------+---------------------+
| A36.                  | A37.                   | A38.                |
|                       |                        |                     |
| How many months       | During (that/those)    | During (that/those) |
| during the reference  | month(s), did          | month(s), how many  |
| year, that is, from   | (SUBJECT) use          | minutes or hours    |
|                       | (ITEM)...              | per day or week did |
| ( \_\_\_ / \_\_\_ )   |                        | (he/she) usually    |
| to ( \_\_\_ / \_\_\_  |                        | use (ITEM)?         |
| ),                    |                        |                     |
|                       |                        |                     |
| MO YR MO YR           |                        |                     |
|                       |                        |                     |
| did (he/she) use      |                        |                     |
| (ITEM)? \[Please      |                        |                     |
| include each month in |                        |                     |
| which (he/she) used   |                        |                     |
| it at least once.\]   |                        |                     |
+-----------------------+------------------------+---------------------+
| \|\_\_\_\|\_\_\_\|    | Every day, 1           | \|\_\_\             |
|                       |                        | _\|\_\_\_\|\_\_\_\| |
| \# MONTHS             | At least once          |                     |
|                       |                        | \#                  |
|                       | a week or 2            |                     |
|                       |                        | MINS. 1             |
|                       | Less than once         |                     |
|                       |                        | HRS. 2              |
|                       | a week? 3 (A32b)       |                     |
|                       |                        | PER                 |
|                       |                        |                     |
|                       |                        | DAY 1               |
|                       |                        |                     |
|                       |                        | WK 2                |
+-----------------------+------------------------+---------------------+
| \|\_\_\_\|\_\_\_\|    | Every day, 1           | \|\_\_\             |
|                       |                        | _\|\_\_\_\|\_\_\_\| |
| \# MONTHS             | At least once          |                     |
|                       |                        | \#                  |
|                       | a week or 2            |                     |
|                       |                        | MINS. 1             |
|                       | Less than once         |                     |
|                       |                        | HRS. 2              |
|                       | a week? 3 (A32c)       |                     |
|                       |                        | PER                 |
|                       |                        |                     |
|                       |                        | DAY 1               |
|                       |                        |                     |
|                       |                        | WK 2                |
+-----------------------+------------------------+---------------------+
| \|\_\_\_\|\_\_\_\|    | Every day, 1           | \|\_\_\             |
|                       |                        | _\|\_\_\_\|\_\_\_\| |
| \# MONTHS             | At least once          |                     |
|                       |                        | \#                  |
|                       | a week or 2            |                     |
|                       |                        | MINS. 1             |
|                       | Less than once         |                     |
|                       |                        | HRS. 2              |
|                       | a week? 3 (A32d)       |                     |
|                       |                        | PER                 |
|                       |                        |                     |
|                       |                        | DAY 1               |
|                       |                        |                     |
|                       |                        | WK 2                |
+-----------------------+------------------------+---------------------+
| \|\_\_\_\|\_\_\_\|    | Every day, 1           |                     |
|                       |                        |                     |
| \# MONTHS             | At least once          |                     |
|                       |                        |                     |
|                       | a week or 2            |                     |
|                       |                        |                     |
|                       | Less than once         |                     |
|                       |                        |                     |
|                       | a week? 3              |                     |
+-----------------------+------------------------+---------------------+

+-------------+--------+----------+---------+-------------------------+
| A32.        | A33.   | A34.     | A35.    | BOX D.                  |
|             |        |          |         |                         |
| \[From      | At     | At what  | When    | INTERVIEWER: SKIP       |
| (SUBJECT'S) | what   | age did  | (S      | ACCORDING TO REFERENCE  |
| birth until | age    | (he/she) | UBJECT) | DATE AGE AND AGES       |
| (REFERENCE  | did    | stop     | used    | SPECIFIED IN A33. AND   |
| DATE,       | (h     | using    | (ITEM), | A34.                    |
| \_\_\_ /    | e/she) | the      | did you |                         |
| \_\_\_ )\], | start  | (ITEM)?  | usually |                         |
| did         | using  |          | turn    |                         |
|             | the    |          | down    |                         |
| MO YR       | (      |          | the     |                         |
|             | ITEM)? |          | heat in |                         |
| (he/she)    |        |          | your    |                         |
| ever use    |        |          | home    |                         |
| (ITEM)?     |        |          | while   |                         |
|             |        |          | (       |                         |
|             |        |          | he/she) |                         |
|             |        |          | was     |                         |
|             |        |          | sl      |                         |
|             |        |          | eeping? |                         |
+-------------+--------+----------+---------+-------------------------+
| e.  A hair  | \|\_\_ | \|       |         | AGE STOPPED USING IS    |
|     dryer   | \_\|\_ | \_\_\_\| |         | YOUNGER THAN REFERENCE  |
|     at home | \_\_\| | \_\_\_\| |         | DATE AGE OR DON'T KNOW  |
|     or in a |        |          |         | AGE STARTED             |
|     hair    | AGE    | AGE      |         |                         |
|     salon?  |        |          |         | OR STOPPED 1 (Box E)    |
|             | \< 1   | \< 1     |         |                         |
| YES 1       | YE     | YEAR 00  |         | AGE STARTED USING IS    |
|             | AR..00 |          |         | LESS THAN OR EQUAL TO   |
| NO 2 (Box   |        | STILL    |         | REFERENCE DATE AGE AND  |
| E)          |        | USING 88 |         | STILL USING OR AGE      |
|             |        |          |         | STOPPED USING IS EQUAL  |
|             |        |          |         | TO OR OLDER THAN        |
|             |        |          |         | REFERENCE DATE AGE 2    |
|             |        |          |         | (A36e)                  |
+-------------+--------+----------+---------+-------------------------+

> BOX E.
>
> SUBJECT IS FEMALE AND SUBJECT
>
> WAS 2 OR OLDER AT REFERENCE DATE 1 (A32f)
>
> ALL ELSE 2 (A32g)

+-------------+--------+----------+---------+-------------------------+
| f.  A       | \|\_\_ | \|       | YES 1   | AGE STOPPED USING IS    |
|     curling | \_\|\_ | \_\_\_\| |         | YOUNGER THAN REFERENCE  |
|     iron?   | \_\_\| | \_\_\_\| | NO 2    | DATE AGE OR DON'T KNOW  |
|             |        |          |         | AGE STARTED             |
| YES 1       | AGE    | AGE      |         |                         |
|             |        |          |         | OR STOPPED 1 (A32g)     |
| NO 2 (A32g) | \< 1   | \< 1     |         |                         |
|             | YE     | YEAR 00  |         | AGE STARTED USING IS    |
|             | AR..00 |          |         | LESS THAN OR EQUAL TO   |
|             |        | STILL    |         | REFERENCE DATE AGE AND  |
|             |        | USING 88 |         | STILL USING OR AGE      |
|             |        |          |         | STOPPED USING IS EQUAL  |
|             |        |          |         | TO OR OLDER THAN        |
|             |        |          |         | REFERENCE DATE AGE 2    |
|             |        |          |         | (A36f)                  |
+-------------+--------+----------+---------+-------------------------+
| g.  A night | \|\_\_ | \|       | YES 1   | AGE STOPPED USING IS    |
|     light   | \_\|\_ | \_\_\_\| |         | YOUNGER THAN REFERENCE  |
|     in      | \_\_\| | \_\_\_\| | NO 2    | DATE AGE OR DON'T KNOW  |
|             |        |          |         | AGE STARTED             |
|   (his/her) | AGE    | AGE      |         |                         |
|             |        |          |         | OR STOPPED 1 (Box F)    |
|    bedroom? | \< 1   | \< 1     |         |                         |
|             | YE     | YEAR 00  |         | AGE STARTED USING IS    |
| YES 1       | AR..00 |          |         | LESS THAN OR EQUAL TO   |
|             |        | STILL    |         | REFERENCE DATE AGE AND  |
| NO 2 (Box   |        | USING 88 |         | STILL USING OR AGE      |
| F)          |        |          |         | STOPPED USING IS EQUAL  |
|             |        |          |         | TO OR OLDER THAN        |
|             |        |          |         | REFERENCE DATE AGE 2    |
|             |        |          |         | (A36g)                  |
+-------------+--------+----------+---------+-------------------------+

+----------------------+----------------------+-----------------------+
| A36.                 | A37.                 | A38.                  |
|                      |                      |                       |
| How many months      | During (that/those)  | During (that/those)   |
| during the reference | month(s), did        | month(s), how many    |
| year, that is, from  | (SUBJECT) use        | minutes or hours per  |
|                      | (ITEM)...            | day or week did       |
| ( \_\_\_ / \_\_\_ )  |                      | (he/she) usually use  |
| to ( \_\_\_ / \_\_\_ |                      | (ITEM)?               |
| ),                   |                      |                       |
|                      |                      |                       |
| MO YR MO YR          |                      |                       |
|                      |                      |                       |
| did (he/she) use     |                      |                       |
| (ITEM)? \[Please     |                      |                       |
| include each month   |                      |                       |
| in which (he/she)    |                      |                       |
| used it at least     |                      |                       |
| once.\]              |                      |                       |
+----------------------+----------------------+-----------------------+
| \|\_\_\_\|\_\_\_\|   | Every day, 1         |                       |
|                      |                      |                       |
| \# MONTHS            | At least once        |                       |
|                      |                      |                       |
|                      | a week or 2          |                       |
|                      |                      |                       |
|                      | Less than once       |                       |
|                      |                      |                       |
|                      | a week? 3            |                       |
+----------------------+----------------------+-----------------------+

+----------------------+----------------------+-----------------------+
| \|\_\_\_\|\_\_\_\|   | Every day, 1         |                       |
|                      |                      |                       |
| \# MONTHS            | At least once        |                       |
|                      |                      |                       |
|                      | a week or 2          |                       |
|                      |                      |                       |
|                      | Less than once       |                       |
|                      |                      |                       |
|                      | a week? 3            |                       |
+----------------------+----------------------+-----------------------+
| \|\_\_\_\|\_\_\_\|   |                      |                       |
|                      |                      |                       |
| \# MONTHS            |                      |                       |
+----------------------+----------------------+-----------------------+

+---------------+--------+--------+--------------+--------------------+
| A32.          | A33.   | A34.   | A35.         | BOX D.             |
|               |        |        |              |                    |
| \[From        | At     | At     | When         | INTERVIEWER: SKIP  |
| (SUBJECT'S)   | what   | what   | (SUBJECT)    | ACCORDING TO       |
| birth until   | age    | age    | used (ITEM), | REFERENCE DATE AGE |
| (REFERENCE    | did    | did    | did you      | AND AGES SPECIFIED |
| DATE, \_\_\_  | (h     | (h     | usually turn | IN A33. AND A34.   |
| / \_\_\_ )\], | e/she) | e/she) | down the     |                    |
| did           | start  | stop   | heat in your |                    |
|               | using  | using  | home while   |                    |
| MO YR         | the    | the    | (he/she) was |                    |
|               | (      | (      | sleeping?    |                    |
| (he/she) ever | ITEM)? | ITEM)? |              |                    |
| use (ITEM)?   |        |        |              |                    |
+---------------+--------+--------+--------------+--------------------+

BOX F.

SUBJECT WAS 2 OR OLDER AT REFERENCE DATE 1 (A32h)

SUBJECT WAS LESS THAN 2 AT REFERENCE DATE 2 (A32j)

+-------------+--------+----------+---------+-------------------------+
| h.  A       | \|\_\_ | \|       |         | AGE STOPPED USING IS    |
|             | \_\|\_ | \_\_\_\| |         | YOUNGER THAN REFERENCE  |
|   microwave | \_\_\| | \_\_\_\| |         | DATE AGE OR DON'T KNOW  |
|     iron?   |        |          |         | AGE STARTED             |
|             | AGE    | AGE      |         |                         |
| YES 1       |        |          |         | OR STOPPED 1 (A32i)     |
|             | \< 1   | \< 1     |         |                         |
| NO 2 (A32i) | YE     | YEAR 00  |         | AGE STARTED USING IS    |
|             | AR..00 |          |         | LESS THAN OR EQUAL TO   |
|             |        | STILL    |         | REFERENCE DATE AGE AND  |
|             |        | USING 88 |         | STILL USING OR AGE      |
|             |        |          |         | STOPPED USING IS EQUAL  |
|             |        |          |         | TO OR OLDER THAN        |
|             |        |          |         | REFERENCE DATE AGE 2    |
|             |        |          |         | (A36h)                  |
+-------------+--------+----------+---------+-------------------------+
| i.  A sound | \|\_\_ | \|       |         | AGE STOPPED USING IS    |
|     system  | \_\|\_ | \_\_\_\| |         | YOUNGER THAN REFERENCE  |
|     while   | \_\_\| | \_\_\_\| |         | DATE AGE OR DON'T KNOW  |
|     using a |        |          |         | AGE STARTED             |
|             | AGE    | AGE      |         |                         |
|    headset, |        |          |         | OR STOPPED 1 (A32j)     |
|             | \< 1   | \< 1     |         |                         |
|   including | YE     | YEAR 00  |         | AGE STARTED USING IS    |
|     a       | AR..00 |          |         | LESS THAN OR EQUAL TO   |
|             |        | STILL    |         | REFERENCE DATE AGE AND  |
|    portable |        | USING 88 |         | STILL USING OR AGE      |
|     radio,  |        |          |         | STOPPED USING IS EQUAL  |
|     tape    |        |          |         | TO OR OLDER THAN        |
|     player, |        |          |         | REFERENCE DATE AGE 2    |
|     CD      |        |          |         | (A36i)                  |
|     player  |        |          |         |                         |
|     or      |        |          |         |                         |
|     stereo? |        |          |         |                         |
|             |        |          |         |                         |
| YES 1       |        |          |         |                         |
|             |        |          |         |                         |
| NO 2 (A32j) |        |          |         |                         |
+-------------+--------+----------+---------+-------------------------+
| j.  A       | \|\_\_ | \|       |         | AGE STOPPED USING IS    |
|     stereo  | \_\|\_ | \_\_\_\| |         | YOUNGER THAN REFERENCE  |
|     sound   | \_\_\| | \_\_\_\| |         | DATE AGE OR DON'T KNOW  |
|     system  |        |          |         | AGE STARTED             |
|     without | AGE    | AGE      |         |                         |
|     using a |        |          |         | OR STOPPED 1 (Box G)    |
|     headset | \< 1   | \< 1     |         |                         |
|             | YE     | YEAR 00  |         | AGE STARTED USING IS    |
| YES 1       | AR..00 |          |         | LESS THAN OR EQUAL TO   |
|             |        | STILL    |         | REFERENCE DATE AGE AND  |
| NO 2 (Box   |        | USING 88 |         | STILL USING OR AGE      |
| G)          |        |          |         | STOPPED USING IS EQUAL  |
|             |        |          |         | TO OR OLDER THAN        |
|             |        |          |         | REFERENCE DATE AGE 2    |
|             |        |          |         | (A36j)                  |
+-------------+--------+----------+---------+-------------------------+

BOX G.

SUBJECT WAS 3 OR OLDER AT REFERENCE DATE 1 (A32k)

SUBJECT WAS LESS THAN 3 AT REFERENCE DATE 2 (A39)

+-------------+--------+----------+---------+-------------------------+
| k.  A video | \|\_\_ | \|       |         | AGE STOPPED USING IS    |
|     arcade  | \_\|\_ | \_\_\_\| |         | YOUNGER THAN REFERENCE  |
|             | \_\_\| | \_\_\_\| |         | DATE AGE OR DON'T KNOW  |
|    machine? |        |          |         | AGE STARTED             |
|             | AGE    | AGE      |         |                         |
| YES 1       |        |          |         | OR STOPPED 1 (A39)      |
|             | \< 1   | \< 1     |         |                         |
| NO 2 (A39)  | YE     | YEAR 00  |         | AGE STARTED USING IS    |
|             | AR..00 |          |         | LESS THAN OR EQUAL TO   |
|             |        | STILL    |         | REFERENCE DATE AGE AND  |
|             |        | USING 88 |         | STILL USING OR AGE      |
|             |        |          |         | STOPPED USING IS EQUAL  |
|             |        |          |         | TO OR OLDER THAN        |
|             |        |          |         | REFERENCE DATE AGE 2    |
|             |        |          |         | (A36k)                  |
+-------------+--------+----------+---------+-------------------------+

+-------------------------+--------------------+----------------------+
| A36.                    | A37.               | A38.                 |
|                         |                    |                      |
| How many months during  | During             | During (that/those)  |
| the reference year,     | (that/those)       | month(s), how many   |
| that is, from           | month(s), did      | minutes or hours per |
|                         | (SUBJECT) use      | day or week did      |
| ( \_\_\_ / \_\_\_ ) to  | (ITEM)...          | (he/she) usually use |
| ( \_\_\_ / \_\_\_ ),    |                    | (ITEM)?              |
|                         |                    |                      |
| MO YR MO YR             |                    |                      |
|                         |                    |                      |
| did (he/she) use        |                    |                      |
| (ITEM)? \[Please        |                    |                      |
| include each month in   |                    |                      |
| which (he/she) used it  |                    |                      |
| at least once.\]        |                    |                      |
+-------------------------+--------------------+----------------------+

+-------------------------+--------------------+----------------------+
| \|\_\_\_\|\_\_\_\|      | Every day, 1       |                      |
|                         |                    |                      |
| \# MONTHS               | At least once      |                      |
|                         |                    |                      |
|                         | a week or 2        |                      |
|                         |                    |                      |
|                         | Less than once     |                      |
|                         |                    |                      |
|                         | a week? 3          |                      |
+-------------------------+--------------------+----------------------+
| \|\_\_\_\|\_\_\_\|      | Every day, 1       |                      |
|                         |                    |                      |
| \# MONTHS               | At least once      |                      |
|                         |                    |                      |
|                         | a week or 2        |                      |
|                         |                    |                      |
|                         | Less than once     |                      |
|                         |                    |                      |
|                         | a week? 3          |                      |
+-------------------------+--------------------+----------------------+
| \|\_\_\_\|\_\_\_\|      | Every day, 1       |                      |
|                         |                    |                      |
| \# MONTHS               | At least once      |                      |
|                         |                    |                      |
|                         | a week or 2        |                      |
|                         |                    |                      |
|                         | Less than once     |                      |
|                         |                    |                      |
|                         | a week? 3          |                      |
+-------------------------+--------------------+----------------------+

+-------------------------+--------------------+----------------------+
| \|\_\_\_\|\_\_\_\|      | Every day, 1       |                      |
|                         |                    |                      |
| \# MONTHS               | At least once      |                      |
|                         |                    |                      |
|                         | a week or 2        |                      |
|                         |                    |                      |
|                         | Less than once     |                      |
|                         |                    |                      |
|                         | a week? 3          |                      |
+-------------------------+--------------------+----------------------+

A39. Did (SUBJECT) ever watch TV during the reference year? Please
include the situations listed on this card -- watching TV at home,
watching TV at a friend or relative's home or while at day care, playing
near any television while it was on or watching videos using a VCR
connected to a television. Do not include playing electronic video
games.

**[SHOW CARD C]{.underline}**

YES 1

NO 2 (BOX J)

A40. Including the situations listed on this card, how many minutes or
hours per day or week did (SUBJECT) watch TV during the reference year?
\[Remember to include weekends.\]

**[SHOW CARD C]{.underline}**

\|\_\_\_\|\_\_\_\|\_\_\_\| MIN 1 PER DAY 1

\# HRS 2 WK 2

MO 3

> BOX H.
>
> A40 IS \< 10 MINUTES PER DAY OR \< 60 MINUTES
>
> PER WEEK OR \< 4 HOURS PER MONTH 1 (BOX J)
>
> ALL ELSE 2 (INTRO
>
> BEFORE
>
> A41)

Now I'll be asking you about the television set that (SUBJECT) watched
**the most** during the reference year. Please include the situations
listed on this card when answering these questions.

**[SHOW CARD C]{.underline}**

A41. Was this a black-and-white or color television?

BLACK-AND-WHITE 1

COLOR 2

A42. What was the size of the TV screen?

**[SHOW CARD B]{.underline}**

> A. 5 INCHES 1
>
> B. 9 INCHES 2
>
> C. 13 INCHES 3 (A44)
>
> D. 19 INCHES 4 (A44)
>
> E. 26 INCHES 5 (A44)

F.  OTHER (SPECIFY) 91 (A43 if \< 9", A44 if \> 9")

A43. While (SUBJECT) was watching this TV during the reference year, was
it more often powered with batteries or was it usually plugged into an
electrical outlet?

BATTERIES 1

ELECTRICITY 2

OTHER (SPECIFY) 91

A44. To the best of your knowledge, how old was this television at the
time that (SUBJECT) was watching it during the reference year? Was it...

Less than 5 years old, 1

5 to 10 years old or 2

More than 10 years old? 3

A45. How many minutes or hours per day or week did (SUBJECT) usually
watch or play near this TV during the reference year? \[Remember to
include weekends.\]

\|\_\_\_\|\_\_\_\|\_\_\_\| MIN 1 PER DAY 1

\# HRS 2 WK 2

MO 3

A46. How far did (SUBJECT) usually sit from this TV? Was it...

Less than 4 feet, 1

4 to 6 feet or 2

More than 6 feet? 3

> BOX I.
>
> MOST WATCHED TV IN A41 WAS COLOR 1 (A47)
>
> MOST WATCHED TV IN A41 WAS BLACK-AND-WHITE
>
> OR DON'T KNOW 2 (BOX J)

A47. Including the situations listed on this card, did (SUBJECT)
regularly watch or play near a black-and-white TV while it was on during
the reference year?

**[SHOW CARD C]{.underline}**

YES 1

NO 2 (BOX J)

A48. What was the size of the TV screen?

**[SHOW CARD B]{.underline}**

> A. 5 INCHES 1
>
> B. 9 INCHES 2
>
> C. 13 INCHES 3 (A50)
>
> D. 19 INCHES 4 (A50)
>
> E. 26 INCHES 5 (A50)
>
> F. OTHER (SPECIFY) 91 (A49 if \< 9", A50 if \> 9")

A49. While (SUBJECT) was watching this TV during the reference year, was
it more often powered with batteries or was it usually plugged into an
electrical outlet?

BATTERIES 1

ELECTRICITY 2

OTHER (SPECIFY) 91

A50. To the best of your knowledge, how old was this television at the
time that (SUBJECT) was watching it during the reference year? Was it...

Less than 5 years old, 1

5 to 10 years old or 2

More than 10 years old? 3

A51. How many minutes or hours per day or week did (SUBJECT) usually
watch or play near this TV during the reference year? \[Remember to
include weekends.\]

\|\_\_\_\|\_\_\_\|\_\_\_\| MIN 1 PER DAY 1

\# HRS 2 WK 2

MO 3

A52. How far did (SUBJECT) usually sit from this TV? Was it...

Less than 4 feet, 1

4 to 6 feet or 2

More than 6 feet? 3

BOX J.

SUBJECT WAS 3 OR OLDER AT REFERENCE DATE 1 (A53)

SUBJECT WAS LESS THAN 3 AT REFERENCE DATE 2 (BOX M)

A53. Did (SUBJECT) ever use an electronic video game connected to a
television?

YES 1

NO 2 (BOX M)

A54. At what age did (he/she) start using an electronic video game
connected to a TV?

\|\_\_\_\|\_\_\_\|

AGE

\< 1 YEAR 00

A55. At what age did (he/she) stop using an electronic video game
connected to a TV?

\|\_\_\_\|\_\_\_\|

AGE

\< 1 YEAR 00

STILL USING 88

> BOX K. REF. DATE AGE: \_\_\_\_\_\_\_\_
>
> AGE STARTED USING VIDEO GAMES (A54) IS LESS THAN OR EQUAL
>
> TO REFERENCE DATE AGE AND SUBJECT STILL USING OR
>
> AGE STOPPED USING ELECTRONIC VIDEO GAMES (A55) IS
>
> EQUAL TO OR OLDER THAN REFERENCE DATE AGE 1 (BOX L)
>
> AGE STOPPED USING VIDEO GAMES (A55) IS YOUNGER THAN REFERENCE
>
> DATE AGE OR AGE STARTED USING VIDEO GAMES (A54) IS
>
> OLDER THAN REFERENCE DATE AGE OR DON'T KNOW IN
>
> A54 AND/OR A55 2 (BOX M)
>
> BOX L.
>
> SUBJECT WACTCHED TV (A39 = 1) 1 (A56)
>
> SUBJECT DID NOT WATCH TV (A39 = 2) OR
>
> A39 = DON'T KNOW 2 (A57)

A56. During the reference year, which TV did (SUBJECT) usually use while
playing electronic video games? Was it the (color/black-and-white)
television (he/she) watched the most, (or the black-and-white television
(he/she) watched) or some other TV?

COLOR/BLACK-AND-WHITE TV

WATCHED THE MOST 1 (A61)

BLACK-AND-WHITE TV HE/SHE

WATCHED 2 (A61)

SOME OTHER TV 3

DON'T KNOW 8 (A61)

A57. Was the television (he/she) used to play electronic games a
black-and-white or color television?

BLACK-AND-WHITE 1

COLOR 2

A58. What was the size of the TV screen?

**[SHOW CARD B]{.underline}**

> A. 5 INCHES 1
>
> B. 9 INCHES 2
>
> C. 13 INCHES 3 (A60)
>
> D. 19 INCHES 4 (A60)
>
> E. 26 INCHES 5 (A60)
>
> F. OTHER (SPECIFY) 91 (A59 if \< 9", A60 if \> 9")

A59. While (SUBJECT) was playing electronic video games on this TV
during the reference year, was it more often powered with batteries or
was it usually plugged into an electrical outlet?

BATTERIES 1

ELECTRICITY 2

OTHER (SPECIFY) 91

A60. To the best of your knowledge, how old was this television at the
time that (SUBJECT) was using it during the reference year? Was it...

Less than 5 years old, 1

5 to 10 years old or 2

More than 10 years old? 3

A61. How many months during the reference year did (SUBJECT) use
electronic video games connected to a TV?

\|\_\_\_\|\_\_\_\|

\# MONTHS

A62. During (that/those) month(s), did (SUBJECT) use electronic video
games connected to a TV...

Every day, 1

At least once a week or 2

Less than once a week? 3 (A64)

DON'T KNOW 4 (A64)

A63. How many minutes or hours per day or week did (SUBJECT) usually
play electronic video games during the reference year? \[Remember to
include weekends.\]

\|\_\_\_\|\_\_\_\|\_\_\_\| MIN 1 PER DAY 1

\# HRS 2 WK 2

MO 3

A64. How far did (SUBJECT) usually sit from the screen while playing
electronic video games?

LESS THAN OR EQUAL TO 3 FEET 1

MORE THAN 3 FEET 2

> BOX M.
>
> SUBJECT WAS 2 OR OLDER AT REFERENCE DATE 1 (A65)
>
> SUBJECT WAS LESS THAN 2 AT REFERENCE DATE 2 (NEXT SECTION)

A65. During the reference year, did (SUBJECT) use an electric clock
radio that was located within 3 feet of where (he/she) was sleeping?

YES 1

NO 2 (A67)

A66. Did this clock have a digital or dial display?

DIGITAL 1

DIAL 2

A67. Did (SUBJECT) ever use a personal computer (PC) or computer
terminal with a monitor? Please include computers used while at home,
school or anywhere else.

YES 1

NO 2 (NEXT SECTION)

A68. At what age did (he/she) start using a computer?

\|\_\_\_\|\_\_\_\|

AGE

\< 1 YEAR 00

A69. At what age did (he/she) stop using a computer?

\|\_\_\_\|\_\_\_\|

AGE

\< 1 YEAR 00

STILL USING 88

> BOX N. REF. DATE AGE: \_\_\_\_\_\_\_\_
>
> AGE STARTED USING COMPUTER (A68) IS LESS THAN OR EQUAL
>
> TO REFERENCE DATE AGE AND SUBJECT STILL USING OR
>
> AGE STOPPED USING (A69) IS EQUAL TO OR OLDER
>
> THAN REFERENCE DATE AGE 1 (A70)
>
> AGE STOPPED USING COMPUTER (A69) IS YOUNGER THAN REFERENCE
>
> DATE AGE OR AGE STARTED USING (A68) IS OLDER THAN
>
> REFERENCE DATE AGE OR DON'T KNOW IN
>
> A68 AND/OR A69 2 (NEXT
>
> SECTION)

A70. During the reference year, how many minutes or hours per day or
week did (SUBJECT) use a computer? Please include the time(he/she) spent
sitting within 3 feet of a computer while the monitor was on whether or
not(he/she) was actually using it. \[Remember to include weekends.\]

\|\_\_\_\|\_\_\_\|\_\_\_\| MIN 1 PER DAY 1

\# HRS 2 WK 2

MO 3

A71. Did (SUBJECT) use more than one computer on a regular basis during
the reference year?

YES 1

NO 2 (A72)

\[**READ IF A71 = 1**: Now I'll be asking about the computer (SUBJECT)
used **the most** during the reference year.\]

A72. Was the monitor on (the computer (he/she) used/this computer) a
monochrome or a color monitor?

MONOCHROME 1

COLOR 2

A73. During how many months of the reference year did (SUBJECT) use this
computer?

\|\_\_\_\|\_\_\_\|

\# MONTHS

LESS THAN 1 MONTH 96

> BOX O.
>
> A70 IS \< 10 MINUTES PER DAY OR \< 60 MINUTES
>
> PER WEEK OR \< 4 HOURS PER MONTH
>
> OR A71 = 2 OR DON'T KNOW 1 (NEXT SECTION)
>
> ALL ELSE 2 (A74)

A74. During (that/those) month(s), how many minutes or hours per day or
week did (SUBJECT) usually use this computer? \[Remember to include
weekends.\]

\|\_\_\_\|\_\_\_\|\_\_\_\| MIN 1 PER DAY 1

\# HRS 2 WK 2

MO 3

**\[IF A71 = 2 (NO)**: skip to next section.\]

Now I would like to ask you the same series of questions about the
computer (SUBJECT) used **the second most** frequently.

A75. Was the monitor on this computer a monochrome or a color monitor?

MONOCHROME 1

COLOR 2

A76. During how many months of the reference year did (SUBJECT) use this
computer?

\|\_\_\_\|\_\_\_\|

\# MONTHS

LESS THAN 1 MONTH 96

A77. During (that/those) month(s), how many minutes or hours per day or
week did (SUBJECT) usually use this computer? \[Remember to include
weekends.\]

\|\_\_\_\|\_\_\_\|\_\_\_\| MIN 1 PER DAY 1

\# HRS 2 WK 2

MO 3