| 1 | A | B | C | D | E | F | G |
| --- | --- | --- | --- | --- | --- | --- | --- |
| 2 | prevalence of oral contraceptive use, by selected characteristics, women aged 15 to 49, household population, canada, 2007 to 2011 |  |  |  |  |  |  |
| 3 | characteristic | number '000 | 95% confidence interval |  | % | 95% confidence interval |  |
| 4 |  |  | from | to |  | from | to |
| 5 | total | 1,297.8 | 1,096.4 | 1,499.2 | 16.2 | 14.0 | 18.7 |
| 6 | age group |  |  |  |  |  |  |
| 7 | 15 to 19 | 316.3 | 242.6 | 390.0 | 29.9 | 24.4 | 36.0 |
| 8 | 20 to 24 | 312.9 | 184.3 | 441.5 | 29.2 | 21.3 | 38.6 |
| 9 | 25 to 29 | 278.9 | 155.8 | 402.0 | 26.8 | 18.4 | 37.2 |
| 10 | 30 to 34 | 197.1 | 106.1 | 288.0 | 20.0 | 13.4 | 28.9 |
| 11 | 35 to 39 | 120.2 | 71.0 | 169.3 | 9.7 | 6.4 | 14.4 |
| 12 | 40 to 49 | 72.37 | 40.7 | 104.1 | 2.8 | 1.8 | 4.1 |
| 13 | marital status |  |  |  |  |  |  |
| 14 | married | 242.9 | 145.8 | 340.1 | 7.6 | 5.2 | 10.8 |
| 15 | common-law | 303.8 | 198.0 | 409.7 | 22.5 | 17.5 | 28.4 |
| 16 | previously married | 22.4 | 7.2 | 37.6 | 4.7 | 2.4 | 9.0 |
| 17 | single | 728.6 | 570.1 | 887.1 | 24.7 | 20.2 | 29.9 |
| 18 | parity |  |  |  |  |  |  |
| 19 | nulliparous | 932.0 | 767.5 | 1,096.4 | 25.9 | 21.7 | 30.7 |
| 20 | parous | 365.1 | 261.1 | 469.1 | 8.4 | 6.5 | 10.9 |
| 21 | sexually active in past year |  |  |  |  |  |  |
| 22 | no | 175.3 | 69.5 | 281.2 | 13.7 | 7.9 | 22.6 |
| 23 | yes | 1,121.8 | 950.7 | 1,292.8 | 16.9 | 14.7 | 19.4 |
| 24 | immigrant |  |  |  |  |  |  |
| 25 | no | 1,164.6 | 971.8 | 1,357.3 | 19.0 | 16.7 | 21.5 |
| 26 | yes | 133.2 | 41.1 | 225.4 | 7.1 | 3.7 | 13.2 |
| 27 | household income |  |  |  |  |  |  |
| 28 | lower | 653.2 | 485.9 | 820.5 | 17.0 | 13.1 | 21.6 |
| 29 | higher | 644.6 | 519.9 | 769.3 | 15.5 | 13.0 | 18.4 |
| 30 | has regular medical doctor |  |  |  |  |  |  |
| 31 | no | 150.0 | 73.9 | 226.1 | 13.7 | 8.9 | 20.6 |
| 32 | yes | 1,147.8 | 935.8 | 1,359.8 | 16.6 | 14.0 | 19.5 |

Question: according to combined data from the 2007 to 2009 and 2009 to 2011 chms, how many non-pregnant women aged 15 to 49 used ocs in the previous month?
Answer: 1297.8

Question: according to combined data from the 2007 to 2009 and 2009 to 2011 chms, what was the proportion of non-pregnant women aged 15 to 49 that used ocs in the previous month?
Answer: 16.2

Question: what was the prevalence of oc use among 15- to 19-year-olds?
Answer: 29.9

Question: what was the prevalence of oc use among 40- to 49-year-olds?
Answer: 2.8

Question: was oc use higher among single women or was among married women?
Answer: single

Question: was oc use higher among single women or was that among previously married women?
Answer: single

Question: was oc use higher among nulliparous women or was that among parous women?
Answer: nulliparous

Question: was oc use higher among canadian-born (non-immigrant) women or was that among immigrant women?
Answer: immigrant, no