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Subject: Fw: Diette - Response to REQUEST FOR PM AIR QUALITY DATA

To: Beth Hassett-Sipple/RTP/USEPA/US@EPA

From: Greg Diette <gdiette@jhmi.edu>

Date: 06/25/2009 03:49PM

Subject: RE: Authors of recent U.S. and Canadian epidemiological studies evaluating health effects 

associated with exposure to fine and thoracic coarse particles REQUEST FOR PM AIR QUALITY DATA

Hopefully this has what you need. Greg Diette 

 

From: Hassett-Sipple.Beth@epamail.epa.gov [mailto:Hassett-Sipple.Beth@epamail.epa.gov] 

Sent: Wednesday, June 24, 2009 11:49 AM 

To: Greg Diette 

Subject: RE: Authors of recent U.S. and Canadian epidemiological studies evaluating health effects 

associated with exposure to fine and thoracic coarse particles REQUEST FOR PM AIR QUALITY DATA 

 

Dr. Diette, thank you for providing this information to us. The air quality percentile values that you 

presented in your attached file included 95th and 99th percentile values. Could you also provide us with 

96th, 97th, and 98th percentiles? 

Thank you again for your assistance. 

Regards, 

Beth 

Beth M. Hassett-Sipple 

Environmental Health Scientist 

Ambient Standards Group (C504-06) 

Health and Environmental Impacts Division 

Office of Air Quality Planning and Standards 

U.S. Environmental Protection Agency 

109 TW Alexander Drive 

RTP, NC 27711 

(919) 541-4605 

Hassett-Sipple.Beth@epa.gov 

(919) 541-0237 (FAX) 

From: Greg Diette <gdiette@jhmi.edu> 

To: Beth Hassett-Sipple/RTP/USEPA/US@EPA 

Date: 06/22/2009 02:48 PM 

Subje

ct: 

RE: Authors of recent U.S. and Canadian epidemiological studies evaluating health effects associated with exposure to fine and 

thoracic coarse particles REQUEST FOR PM AIR QUALITY DATA 

Dear Beth, I've attached the PM 2.5 data you requested that are relevant for our study. Hope this is 

helpful and please let me know if you need something further. Best, Greg Diette 
[attachment "eparequest2_061609.log" deleted by Beth

Hassett-Sipple/RTP/USEPA/US] 
eparequest3_062509

--------------------------------------------------------------------------------

 log: F:\eparequest_062509.log

 log type: text

 opened on: 25 Jun 2009, 15:05:19

. summ amb25nodups, detail

 amb25nodups

-------------------------------------------------------------

 Percentiles Smallest

 1% 3.625 3.22

 5% 4.9 3.455

10% 5.631429 3.582 Obs 339

25% 7.793334 3.625 Sum of Wgt. 339

50% 11.3825 Mean 12.42657

 Largest Std. Dev. 6.43605

75% 15.4925 34.1275

90% 20.13 36.066 Variance 41.42273

95% 24.88333 38.1075 Skewness 1.478915

99% 34.1275 45.2 Kurtosis 6.284014

. centile amb25nodups, centile(96 97 98)

 -- Binom. Interp. --

 Variable | Obs Percentile Centile [95% Conf. Interval]

-------------+-------------------------------------------------------------

 amb25nodups | 339 96 25.972 23.94835 31.23936

 | 97 28.655 24.80073 33.53881

 | 98 32.0165 27.13503 36.76867

. sort year

. by year:summ amb25nodups, detail

--------------------------------------------------------------------------------

-> year = 2001

 amb25nodups

-------------------------------------------------------------

 Percentiles Smallest

 1% 6.845 6.845

 5% 6.845 6.8675

10% 6.8675 8.875 Obs 16

25% 9.787917 9.753333 Sum of Wgt. 16

50% 15.18125 Mean 15.69516

 Largest Std. Dev. 6.750165

75% 20.395 21.7675

90% 23.91 23.57667 Variance 45.56473

95% 30.1375 23.91 Skewness .4829445

99% 30.1375 30.1375 Kurtosis 2.415006

--------------------------------------------------------------------------------

-> year = 2002

 amb25nodups

-------------------------------------------------------------

 Percentiles Smallest

Page 1
eparequest3_062509

 1% 6 5.903333

 5% 7.495 6

10% 8.7725 6.4525 Obs 151

25% 10.49 6.55 Sum of Wgt. 151

50% 12.91 Mean 15.01009

 Largest Std. Dev. 6.804114

75% 17.71 34.1275

90% 24.27333 36.066 Variance 46.29597

95% 28.7525 38.1075 Skewness 1.610936

99% 38.1075 45.2 Kurtosis 6.114968

--------------------------------------------------------------------------------

-> year = 2003

 amb25nodups

-------------------------------------------------------------

 Percentiles Smallest

 1% 3.73 3.582

 5% 4.826667 3.73

10% 5.4125 3.7875 Obs 127

25% 6.106667 4.061666 Sum of Wgt. 127

50% 9.3725 Mean 10.42528

 Largest Std. Dev. 4.949005

75% 13.5425 20.055

90% 16.485 21.514 Variance 24.49265

95% 18.026 28.265 Skewness 1.366636

99% 28.265 33.54 Kurtosis 6.317672

--------------------------------------------------------------------------------

-> year = 2004

 amb25nodups

-------------------------------------------------------------

 Percentiles Smallest

 1% 3.22 3.22

 5% 3.625 3.455

10% 3.966667 3.625 Obs 45

25% 5.1425 3.85 Sum of Wgt. 45

50% 6.83 Mean 8.243345

 Largest Std. Dev. 4.295927

75% 10.5675 15.57

90% 15.45256 16.74 Variance 18.45499

95% 16.74 18.825 Skewness 1.043647

99% 19.225 19.225 Kurtosis 3.088147

. by year:centile amb25nodups, centile(96 97 98)

--------------------------------------------------------------------------------

-> year = 2001

 -- Binom. Interp. --

 Variable | Obs Percentile Centile [95% Conf. Interval]

-------------+-------------------------------------------------------------

 amb25nodups | 16 96 30.1375 23.57899 30.1375*

 | 97 30.1375 23.64153 30.1375*

 | 98 30.1375 23.77307 30.1375*

* Lower (upper) confidence limit held at minimum (maximum) of sample

Page 2
eparequest3_062509

--------------------------------------------------------------------------------

-> year = 2002

 -- Binom. Interp. --

 Variable | Obs Percentile Centile [95% Conf. Interval]

-------------+-------------------------------------------------------------

 amb25nodups | 151 96 31.61973 25.16166 37.66984

 | 97 33.75915 27.267 43.04297

 | 98 36.02723 29.9789 45.2*

* Lower (upper) confidence limit held at minimum (maximum) of sample

--------------------------------------------------------------------------------

-> year = 2003

 -- Binom. Interp. --

 Variable | Obs Percentile Centile [95% Conf. Interval]

-------------+-------------------------------------------------------------

 amb25nodups | 127 96 19.2489 16.99337 30.08927

 | 97 20.28844 17.52038 33.27604

 | 98 24.48444 18.15059 33.54*

* Lower (upper) confidence limit held at minimum (maximum) of sample

--------------------------------------------------------------------------------

-> year = 2004

 -- Binom. Interp. --

 Variable | Obs Percentile Centile [95% Conf. Interval]

-------------+-------------------------------------------------------------

 amb25nodups | 45 96 18.873 14.7803 19.225*

 | 97 19.061 15.4941 19.225*

 | 98 19.225 15.83656 19.225*

Page 3
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Subject: Fw: Deitte Response to Request for PM Air Quality Data June 22nd 2009

From: Greg Diette <gdiette@jhmi.edu>

To: Beth Hassett-Sipple/RTP/USEPA/US@EPA

Date: 06/22/2009 02:48 PM

Subject: RE: Authors of recent U.S. and Canadian epidemiological studies evaluating health effects 

associated with exposure to fine and thoracic coarse particles REQUEST FOR PM AIR QUALITY 

DATA

Dear Beth, I've attached the PM 2.5 data you requested that are relevant for 

our study. Hope this is helpful and please let me know if you need something 

further. Best, Greg Diette
eparequest2_061609

BIESAK Study

EPA Data Request - Ambient PM 2.5

June 16, 2009

--------------------------------------------------------------------------------

 log: F:\eparequest_061609.log

 log type: text

 opened on: 16 Jun 2009, 15:05:19

. summ amb25nodups, detail

 amb25nodups

-------------------------------------------------------------

 Percentiles Smallest

 1% 3.625 3.22

 5% 4.9 3.455

10% 5.631429 3.582 Obs 339

25% 7.793334 3.625 Sum of Wgt. 339

50% 11.3825 Mean 12.42657

 Largest Std. Dev. 6.43605

75% 15.4925 34.1275

90% 20.13 36.066 Variance 41.42273

95% 24.88333 38.1075 Skewness 1.478915

99% 34.1275 45.2 Kurtosis 6.284014

. sort year

. by year:summ amb25nodups, detail

--------------------------------------------------------------------------------

-> year = 2001

 amb25nodups

-------------------------------------------------------------

 Percentiles Smallest

 1% 6.845 6.845

 5% 6.845 6.8675

10% 6.8675 8.875 Obs 16

25% 9.787917 9.753333 Sum of Wgt. 16

50% 15.18125 Mean 15.69516

 Largest Std. Dev. 6.750165

75% 20.395 21.7675

90% 23.91 23.57667 Variance 45.56473

95% 30.1375 23.91 Skewness .4829445

99% 30.1375 30.1375 Kurtosis 2.415006

--------------------------------------------------------------------------------

-> year = 2002

 amb25nodups

-------------------------------------------------------------

 Percentiles Smallest

 1% 6 5.903333

 5% 7.495 6

10% 8.7725 6.4525 Obs 151

25% 10.49 6.55 Sum of Wgt. 151

Page 1
eparequest2_061609

50% 12.91 Mean 15.01009

 Largest Std. Dev. 6.804114

75% 17.71 34.1275

90% 24.27333 36.066 Variance 46.29597

95% 28.7525 38.1075 Skewness 1.610936

99% 38.1075 45.2 Kurtosis 6.114968

--------------------------------------------------------------------------------

-> year = 2003

 amb25nodups

-------------------------------------------------------------

 Percentiles Smallest

 1% 3.73 3.582

 5% 4.826667 3.73

10% 5.4125 3.7875 Obs 127

25% 6.106667 4.061666 Sum of Wgt. 127

50% 9.3725 Mean 10.42528

 Largest Std. Dev. 4.949005

75% 13.5425 20.055

90% 16.485 21.514 Variance 24.49265

95% 18.026 28.265 Skewness 1.366636

99% 28.265 33.54 Kurtosis 6.317672

--------------------------------------------------------------------------------

-> year = 2004

 amb25nodups

-------------------------------------------------------------

 Percentiles Smallest

 1% 3.22 3.22

 5% 3.625 3.455

10% 3.966667 3.625 Obs 45

25% 5.1425 3.85 Sum of Wgt. 45

50% 6.83 Mean 8.243345

 Largest Std. Dev. 4.295927

75% 10.5675 15.57

90% 15.45256 16.74 Variance 18.45499

95% 16.74 18.825 Skewness 1.043647

99% 19.225 19.225 Kurtosis 3.088147

Ambient PM for the study was measured at a central site located within the study 

area using standard methods (U.S. EPA 1997). PM2.5 was collected using the PM2.5 

Partisol-Plus model 2025 FRM sequential air sampler (Rupprecht & Patashnick Co. 

Inc., Albany, NY) and PM10 using a tapered element oscillating microbalance (TEOM 

1400; Rupprecht & Patashnick).

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