To:

Cc:

Bcc:

Subject: Re: Zhang PM Air Quality Data Request Follow-up

From: "Zhu-Ming Zhang" <zmzhang@wfubmc.edu>

To: Rebecca Yang/RTP/USEPA/US@EPA, "Eric A Whitsel" <ewhitsel@email.unc.edu>

Cc: Lindsay Stanek/RTP/USEPA/US@EPA

Date: 12/02/2009 01:31 PM

Subject: RE: PM Air Quality Data Request Follow-up

Hello, Rebecca:

Hope attached file with both information for PM 2.5 and PM10 can work for you, although our 

study only did analyses with PM2.5.

If you need more detail about study sites (clinical center), please contact to Dr. Eric Whitsel in 

UNC. He is PI for this study.

Best.

Zhu-ming Zhang, MD, MPH

From: Yang.Rebecca@epamail.epa.gov [mailto:Yang.Rebecca@epamail.epa.gov] 

Sent: Tuesday, December 01, 2009 12:39 PM

To: Zhu-Ming Zhang

Cc: Stanek.Lindsay@epamail.epa.gov

Subject: PM Air Quality Data Request Follow-up

Dear Dr. Zhang,

My name is Rebecca Yang and I am writing to you on behalf of Dr. Lindsay Stanek and Ms. Beth 

Hassett-Sipple of the EPA. On October 20, 2009, an email was sent to you requesting descriptive 

statistics on the air quality distribution data for PM 2.5 and/or PM10-2.5 for your study listed below. 

Because the PM Integrated Science Assessment will be finalized mid -December, we are hoping to receive 

all the necessary data by Monday, December 7th. In order to clarify our request and answer any 

questions you may have, I will be contacting you by phone on Friday, December 4th. The statistics of most 

interest for the 24-hour concentrations of PM2.5 and/or PM10-2.5 are the following: 

- 95th percentile

- 96th percentile

- 97th percentile

- 98th percentile

- 99th percentile

- maximum concentration value 

If your study contains thoracic coarse PM data, then the PM10 data for the same statistics as above are 

also requested. If the above data is unavailable, the statistic of most interest is the 98th percentile for the 

PM2.5 size fraction. 

In respect for your time, if there is another researcher/co-author who may be able to handle this air quality 

data request (i.e., has easier access to the data), I would greatly appreciate his/her name and contact 

information. Please also note that any data you provide will be placed in the EPA's public docket. 
I apologize for the inconvenience but the data you provide is critical for inclusion in the EPA 's Integrated

Science Assessment and Policy Assessment Document for Particulate Matter . Unless I hear from you 

otherwise, I look forward to speaking with you on Friday, December 4th! Thank you for your time! 

Rebecca Yang 

Student Services Contractor

U.S. Environmental Protection Agency

National Center for Environmental Assessment-RTP

PH: (919) 541-2655

Zhang et al. (2009). “Ambient Fine Particulate Matter Exposure and Myocardial Ischemia in the Environmental 

Epidemiology of Arrhythmogenesis in the Women?s Health Initiative (EEAWHI) Study.” Environ. Health Perspec. 

117(5): 751-756.
PM25_Lag0 = PM2.5 at day Lag0; PM25_Lag1 = PM2.5 at day Lag1 

PM10_Lag0 = PM10 at day Lag0; PM10_Lag1 = PM10 at day Lag1 

EEAWHI Data for EHP 117:751-756 (2009) -- Total 55,529 participants 1

 The MEANS Procedure 

Variable N Mean Std Dev Minimum 95th Pctl 99th Pctl Maximum 

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

PM25_Lag0 55529 14.062 7.882 0.481 29.497 40.620 70.079 

PM25_Lag1 55525 13.826 7.865 0.459 29.145 40.477 84.045 

PM10_Lag0 55529 28.869 12.070 3.268 50.399 64.825 200.973 

PM10_Lag1 55525 27.452 12.095 3.266 48.826 63.759 205.721 

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

EEAWHI Data for EHP 117:751-756 (2009) -- BY SITE (CENTER) 2

-------------------------------------------- center=11 --------------------------------------------- 

 The MEANS Procedure 

Variable N Mean Std Dev Minimum 95th Pctl 99th Pctl Maximum 

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

PM25_Lag0 679 13.432 6.620 4.064 25.769 32.648 46.588 

PM25_Lag1 679 13.055 5.933 2.717 23.805 32.466 44.950 

PM10_Lag0 679 31.372 13.404 8.075 57.243 68.633 79.152 

PM10_Lag1 679 29.383 13.299 7.074 53.875 66.900 130.077 

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

-------------------------------------------- center=12 --------------------------------------------- 

Variable N Mean Std Dev Minimum 95th Pctl 99th Pctl Maximum 

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

PM25_Lag0 1530 18.790 8.627 3.770 34.488 47.931 70.079 

PM25_Lag1 1530 18.703 8.894 1.609 35.362 47.486 73.187 

PM10_Lag0 1530 33.727 14.519 5.775 61.232 78.352 114.636 

PM10_Lag1 1530 32.090 14.188 6.601 56.897 75.760 111.900 

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

-------------------------------------------- center=13 --------------------------------------------- 

Variable N Mean Std Dev Minimum 95th Pctl 99th Pctl Maximum 

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

PM25_Lag0 901 17.318 7.738 3.278 31.148 43.749 55.414 

PM25_Lag1 901 16.925 7.391 3.978 30.724 35.184 48.505 

PM10_Lag0 901 29.830 10.603 5.188 48.340 55.969 81.329 

PM10_Lag1 901 28.603 10.231 8.563 46.767 54.391 61.254 

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

-------------------------------------------- center=14 --------------------------------------------- 

Variable N Mean Std Dev Minimum 95th Pctl 99th Pctl Maximum 

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

PM25_Lag0 2061 11.815 6.114 2.155 24.771 31.124 36.294 

PM25_Lag1 2061 11.232 6.017 2.174 23.664 30.815 47.486 

PM10_Lag0 2061 25.891 10.460 3.268 43.297 53.690 84.904 

PM10_Lag1 2061 23.827 10.076 5.126 42.114 49.872 85.595 

---------------------------------------------------------------------------------------------------- 
 EEAWHI Data for EHP 117:751-756 (2009) -- BY SITE (CENTER) 3 

 

-------------------------------------------- center=15 --------------------------------------------- 

Variable N Mean Std Dev Minimum 95th Pctl 99th Pctl Maximum 

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

PM25_Lag0 1383 13.896 7.252 2.194 27.790 35.603 50.055 

PM25_Lag1 1383 13.687 6.933 2.405 26.682 35.549 48.930 

PM10_Lag0 1383 28.532 11.617 5.668 49.431 59.553 85.891 

PM10_Lag1 1383 26.629 10.942 5.756 46.362 56.026 87.227 

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

-------------------------------------------- center=16 --------------------------------------------- 

 The MEANS Procedure 

Variable N Mean Std Dev Minimum 95th Pctl 99th Pctl Maximum 

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

PM25_Lag0 641 16.163 8.199 1.825 32.443 39.248 44.364 

PM25_Lag1 641 15.774 7.933 1.411 32.312 39.641 45.643 

PM10_Lag0 641 29.969 11.651 7.254 53.930 61.568 80.472 

PM10_Lag1 641 31.057 12.653 7.280 56.285 64.429 87.628 

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

-------------------------------------------- center=17 --------------------------------------------- 

Variable N Mean Std Dev Minimum 95th Pctl 99th Pctl Maximum 

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

PM25_Lag0 474 16.325 7.961 1.238 31.471 41.584 50.388 

PM25_Lag1 474 16.176 7.621 2.742 30.267 39.928 49.626 

PM10_Lag0 474 38.035 15.643 10.353 61.058 92.857 142.779 

PM10_Lag1 474 38.921 15.532 7.546 71.636 89.535 104.468 

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

-------------------------------------------- center=18 --------------------------------------------- 

Variable N Mean Std Dev Minimum 95th Pctl 99th Pctl Maximum 

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

PM25_Lag0 1483 10.426 5.845 2.220 22.210 31.953 44.746 

PM25_Lag1 1483 10.316 5.961 1.529 21.413 31.575 50.288 

PM10_Lag0 1483 24.601 10.746 5.617 45.361 57.390 67.715 

PM10_Lag1 1483 23.769 10.822 5.671 43.231 59.251 87.850 

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

-------------------------------------------- center=19 --------------------------------------------- 

Variable N Mean Std Dev Minimum 95th Pctl 99th Pctl Maximum 

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

PM25_Lag0 1435 19.209 7.848 2.064 33.475 41.695 56.553 

PM25_Lag1 1433 18.817 8.261 3.087 33.764 42.812 75.069 

PM10_Lag0 1435 33.147 12.403 10.465 55.946 66.792 114.551 

PM10_Lag1 1433 31.024 12.223 7.490 52.183 66.125 113.541 

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

-------------------------------------------- center=20 --------------------------------------------- 

Variable N Mean Std Dev Minimum 95th Pctl 99th Pctl Maximum 

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

PM25_Lag0 705 15.935 8.492 2.023 32.589 40.681 47.861 

PM25_Lag1 705 14.801 7.675 2.721 28.638 38.100 47.184 

PM10_Lag0 705 30.779 12.942 5.491 57.756 65.585 89.902 

PM10_Lag1 705 28.060 12.151 7.253 51.608 64.669 91.130 

---------------------------------------------------------------------------------------------------- 
 EEAWHI Data for EHP 117:751-756 (2009) -- BY SITE (CENTER) 4 

 

-------------------------------------------- center=21 --------------------------------------------- 

 The MEANS Procedure 

Variable N Mean Std Dev Minimum 95th Pctl 99th Pctl Maximum 

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

PM25_Lag0 872 12.370 6.255 2.533 25.078 32.727 45.858 

PM25_Lag1 872 12.234 5.934 2.521 23.814 31.226 46.287 

PM10_Lag0 872 31.935 14.068 7.642 57.045 67.611 162.442 

PM10_Lag1 872 30.327 13.701 8.992 54.443 66.984 172.883 

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

-------------------------------------------- center=22 --------------------------------------------- 

Variable N Mean Std Dev Minimum 95th Pctl 99th Pctl Maximum 

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

PM25_Lag0 1118 16.587 7.410 3.037 31.198 41.016 49.868 

PM25_Lag1 1118 16.416 7.792 3.285 32.083 44.465 51.447 

PM10_Lag0 1118 37.415 14.166 6.879 61.724 79.870 125.558 

PM10_Lag1 1118 35.090 14.720 7.168 59.758 79.685 134.284 

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

-------------------------------------------- center=23 --------------------------------------------- 

Variable N Mean Std Dev Minimum 95th Pctl 99th Pctl Maximum 

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

PM25_Lag0 1443 11.594 6.357 2.437 25.179 31.640 39.839 

PM25_Lag1 1443 11.604 6.549 2.428 24.590 33.299 43.931 

PM10_Lag0 1443 26.514 9.826 7.430 43.365 52.320 82.431 

PM10_Lag1 1443 24.811 9.724 6.505 41.824 51.810 79.632 

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

-------------------------------------------- center=24 --------------------------------------------- 

Variable N Mean Std Dev Minimum 95th Pctl 99th Pctl Maximum 

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

PM25_Lag0 1104 15.968 7.175 0.580 29.572 38.463 49.354 

PM25_Lag1 1104 15.716 7.268 0.925 29.047 38.289 47.939 

PM10_Lag0 1104 29.848 11.175 5.893 48.459 64.204 80.458 

PM10_Lag1 1104 27.846 10.756 8.292 46.544 60.393 80.373 

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

-------------------------------------------- center=25 --------------------------------------------- 

Variable N Mean Std Dev Minimum 95th Pctl 99th Pctl Maximum 

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

PM25_Lag0 1753 10.422 5.757 1.803 20.292 31.302 45.489 

PM25_Lag1 1753 10.412 5.340 1.509 20.567 29.960 44.328 

PM10_Lag0 1753 28.869 10.944 6.578 47.189 61.960 135.733 

PM10_Lag1 1753 27.290 11.458 4.608 46.275 61.833 139.603 

---------------------------------------------------------------------------------------------------- 
 EEAWHI Data for EHP 117:751-756 (2009) -- BY SITE (CENTER) 5 

 

-------------------------------------------- center=26 --------------------------------------------- 

 The MEANS Procedure 

Variable N Mean Std Dev Minimum 95th Pctl 99th Pctl Maximum 

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

PM25_Lag0 1443 15.618 8.610 2.924 33.410 47.991 59.201 

PM25_Lag1 1443 15.296 8.419 2.961 33.113 42.999 49.678 

PM10_Lag0 1443 27.496 10.525 7.750 47.271 58.577 78.511 

PM10_Lag1 1443 26.309 10.823 6.751 46.392 57.102 78.269 

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

-------------------------------------------- center=27 --------------------------------------------- 

Variable N Mean Std Dev Minimum 95th Pctl 99th Pctl Maximum 

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

PM25_Lag0 636 10.586 4.623 3.726 20.544 26.317 29.401 

PM25_Lag1 636 10.891 4.925 4.328 21.838 26.073 33.555 

PM10_Lag0 636 36.533 13.745 10.238 63.422 82.319 100.170 

PM10_Lag1 636 35.771 14.358 10.750 60.462 88.888 109.143 

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

-------------------------------------------- center=28 --------------------------------------------- 

Variable N Mean Std Dev Minimum 95th Pctl 99th Pctl Maximum 

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

PM25_Lag0 1463 16.457 8.268 3.394 32.459 42.935 52.515 

PM25_Lag1 1463 16.366 8.327 3.568 32.752 42.532 56.733 

PM10_Lag0 1463 28.433 13.035 6.806 52.077 66.802 85.773 

PM10_Lag1 1463 27.626 12.739 6.643 51.890 62.054 81.306 

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

-------------------------------------------- center=29 --------------------------------------------- 

Variable N Mean Std Dev Minimum 95th Pctl 99th Pctl Maximum 

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

PM25_Lag0 992 9.978 4.140 1.939 19.025 23.279 24.174 

PM25_Lag1 992 9.828 4.309 1.957 19.669 22.610 37.466 

PM10_Lag0 992 34.713 15.848 9.639 59.529 91.376 200.973 

PM10_Lag1 992 32.798 13.648 12.931 57.918 77.606 140.343 

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

-------------------------------------------- center=30 --------------------------------------------- 

Variable N Mean Std Dev Minimum 95th Pctl 99th Pctl Maximum 

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

PM25_Lag0 1592 11.820 7.993 2.262 28.174 46.658 64.897 

PM25_Lag1 1592 11.687 8.407 1.298 29.159 45.783 76.801 

PM10_Lag0 1592 23.595 10.554 5.454 41.860 57.270 92.421 

PM10_Lag1 1592 22.555 10.459 5.441 40.451 53.236 99.569 

---------------------------------------------------------------------------------------------------- 
 EEAWHI Data for EHP 117:751-756 (2009) -- BY SITE (CENTER) 6 

 

-------------------------------------------- center=42 --------------------------------------------- 

 The MEANS Procedure 

Variable N Mean Std Dev Minimum 95th Pctl 99th Pctl Maximum 

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

PM25_Lag0 1609 13.155 8.833 3.450 31.092 51.810 63.183 

PM25_Lag1 1609 13.062 8.981 2.916 30.707 50.784 71.486 

PM10_Lag0 1609 26.013 11.449 5.458 46.104 70.722 97.040 

PM10_Lag1 1609 24.924 11.299 6.668 43.527 70.787 96.916 

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

-------------------------------------------- center=43 --------------------------------------------- 

Variable N Mean Std Dev Minimum 95th Pctl 99th Pctl Maximum 

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

PM25_Lag0 1428 13.098 7.803 1.946 27.721 40.839 47.021 

PM25_Lag1 1428 13.178 7.613 1.921 28.643 36.453 45.042 

PM10_Lag0 1428 29.584 12.245 6.951 53.630 66.930 77.387 

PM10_Lag1 1428 27.906 11.991 8.546 52.305 65.371 85.328 

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

-------------------------------------------- center=44 --------------------------------------------- 

Variable N Mean Std Dev Minimum 95th Pctl 99th Pctl Maximum 

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

PM25_Lag0 1302 15.449 8.097 3.143 31.493 39.435 53.034 

PM25_Lag1 1302 14.904 7.801 2.419 30.596 38.157 50.497 

PM10_Lag0 1302 28.013 11.400 7.451 48.023 63.916 78.811 

PM10_Lag1 1302 26.282 11.242 6.394 45.919 60.739 78.289 

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

-------------------------------------------- center=46 --------------------------------------------- 

Variable N Mean Std Dev Minimum 95th Pctl 99th Pctl Maximum 

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

PM25_Lag0 933 12.450 5.003 2.723 21.511 30.504 37.551 

PM25_Lag1 933 12.276 4.944 2.399 21.211 27.300 39.406 

PM10_Lag0 933 26.147 7.639 10.938 40.251 48.981 62.409 

PM10_Lag1 933 25.540 7.710 11.843 39.768 46.853 70.449 

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

-------------------------------------------- center=47 --------------------------------------------- 

Variable N Mean Std Dev Minimum 95th Pctl 99th Pctl Maximum 

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

PM25_Lag0 963 12.109 4.929 0.481 20.412 27.401 50.641 

PM25_Lag1 963 11.994 5.137 1.928 21.913 29.861 38.879 

PM10_Lag0 963 31.383 9.301 5.782 48.385 58.295 73.336 

PM10_Lag1 963 30.121 9.549 7.809 49.868 56.996 66.738 

---------------------------------------------------------------------------------------------------- 
 EEAWHI Data for EHP 117:751-756 (2009) -- BY SITE (CENTER) 7 

 

-------------------------------------------- center=48 --------------------------------------------- 

 The MEANS Procedure 

Variable N Mean Std Dev Minimum 95th Pctl 99th Pctl Maximum 

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

PM25_Lag0 1411 11.854 6.257 1.936 24.661 31.276 39.540 

PM25_Lag1 1411 11.664 6.470 1.761 24.945 32.013 46.512 

PM10_Lag0 1411 25.925 10.035 3.835 41.891 51.866 85.031 

PM10_Lag1 1411 23.808 10.349 4.714 41.024 51.924 85.007 

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

-------------------------------------------- center=49 --------------------------------------------- 

Variable N Mean Std Dev Minimum 95th Pctl 99th Pctl Maximum 

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

PM25_Lag0 1470 15.743 8.653 3.600 33.034 46.213 52.675 

PM25_Lag1 1470 15.438 8.598 3.722 32.384 40.936 82.584 

PM10_Lag0 1470 26.961 10.422 6.910 46.350 59.514 76.915 

PM10_Lag1 1470 25.476 10.823 6.846 46.767 57.437 92.800 

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

-------------------------------------------- center=50 --------------------------------------------- 

Variable N Mean Std Dev Minimum 95th Pctl 99th Pctl Maximum 

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

PM25_Lag0 1381 16.357 7.404 2.978 29.172 38.473 58.689 

PM25_Lag1 1381 15.885 7.170 2.907 29.356 36.377 46.676 

PM10_Lag0 1381 27.543 10.317 8.467 46.115 58.509 73.615 

PM10_Lag1 1381 25.953 10.275 6.519 44.962 53.219 60.664 

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

-------------------------------------------- center=51 --------------------------------------------- 

Variable N Mean Std Dev Minimum 95th Pctl 99th Pctl Maximum 

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

PM25_Lag0 1194 16.188 8.207 3.830 32.919 43.877 52.627 

PM25_Lag1 1194 15.645 7.871 3.330 31.241 39.110 49.550 

PM10_Lag0 1194 27.610 11.231 7.904 49.617 63.139 78.196 

PM10_Lag1 1194 26.798 11.307 7.763 46.969 63.114 78.158 

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

-------------------------------------------- center=53 --------------------------------------------- 

Variable N Mean Std Dev Minimum 95th Pctl 99th Pctl Maximum 

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

PM25_Lag0 1438 12.614 8.378 1.585 29.687 42.511 65.000 

PM25_Lag1 1438 12.836 9.349 2.812 32.165 52.699 69.465 

PM10_Lag0 1438 25.237 11.374 5.393 45.555 67.347 90.714 

PM10_Lag1 1438 24.323 11.046 6.323 43.858 65.658 104.079 

---------------------------------------------------------------------------------------------------- 
 EEAWHI Data for EHP 117:751-756 (2009) -- BY SITE (CENTER) 8 

 

-------------------------------------------- center=54 --------------------------------------------- 

 The MEANS Procedure 

Variable N Mean Std Dev Minimum 95th Pctl 99th Pctl Maximum 

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

PM25_Lag0 782 12.094 5.431 1.853 23.063 29.608 34.171 

PM25_Lag1 782 12.081 5.330 2.568 22.875 30.097 33.016 

PM10_Lag0 782 26.544 7.946 10.954 40.154 51.588 67.512 

PM10_Lag1 782 25.535 7.640 11.604 39.252 49.500 61.157 

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

-------------------------------------------- center=55 --------------------------------------------- 

Variable N Mean Std Dev Minimum 95th Pctl 99th Pctl Maximum 

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

PM25_Lag0 785 20.111 9.996 5.337 41.655 57.062 65.440 

PM25_Lag1 783 19.951 10.216 5.481 40.861 57.738 84.045 

PM10_Lag0 785 34.516 13.649 4.964 55.523 61.880 181.301 

PM10_Lag1 783 33.915 15.071 7.334 55.157 98.050 170.441 

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

-------------------------------------------- center=56 --------------------------------------------- 

Variable N Mean Std Dev Minimum 95th Pctl 99th Pctl Maximum 

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

PM25_Lag0 1417 12.296 6.713 1.831 25.539 34.017 48.035 

PM25_Lag1 1417 12.291 6.450 2.035 25.694 31.445 41.404 

PM10_Lag0 1417 29.571 12.042 9.769 53.347 64.746 107.276 

PM10_Lag1 1417 28.114 11.794 8.650 50.170 63.791 120.145 

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

-------------------------------------------- center=57 --------------------------------------------- 

Variable N Mean Std Dev Minimum 95th Pctl 99th Pctl Maximum 

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

PM25_Lag0 1079 14.930 8.205 3.099 30.484 46.093 57.019 

PM25_Lag1 1079 13.956 7.744 3.258 29.252 39.044 52.374 

PM10_Lag0 1079 29.006 10.876 8.117 50.627 59.899 81.297 

PM10_Lag1 1079 26.736 10.858 7.212 47.580 59.695 76.798 

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

-------------------------------------------- center=58 --------------------------------------------- 

Variable N Mean Std Dev Minimum 95th Pctl 99th Pctl Maximum 

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

PM25_Lag0 1334 15.579 6.865 3.218 29.317 35.049 46.249 

PM25_Lag1 1334 14.893 6.424 3.053 28.124 33.904 41.649 

PM10_Lag0 1334 28.732 9.906 5.757 46.214 53.402 72.299 

PM10_Lag1 1334 26.579 9.276 6.907 44.091 50.038 60.805 

---------------------------------------------------------------------------------------------------- 
 EEAWHI Data for EHP 117:751-756 (2009) -- BY SITE (CENTER) 9 

 

-------------------------------------------- center=60 --------------------------------------------- 

 The MEANS Procedure 

Variable N Mean Std Dev Minimum 95th Pctl 99th Pctl Maximum 

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

PM25_Lag0 1103 15.843 7.829 2.715 31.041 39.568 44.674 

PM25_Lag1 1103 15.522 7.682 3.291 29.373 39.413 47.139 

PM10_Lag0 1103 29.810 12.164 5.440 53.836 67.617 79.829 

PM10_Lag1 1103 29.648 12.712 5.108 54.070 69.849 93.979 

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

-------------------------------------------- center=61 --------------------------------------------- 

Variable N Mean Std Dev Minimum 95th Pctl 99th Pctl Maximum 

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

PM25_Lag0 1199 17.853 8.258 3.612 33.682 45.235 55.666 

PM25_Lag1 1199 17.781 8.116 4.243 33.259 43.840 52.225 

PM10_Lag0 1199 26.543 10.313 8.372 47.611 52.276 63.274 

PM10_Lag1 1199 25.884 10.068 6.722 45.481 51.158 63.321 

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

-------------------------------------------- center=62 --------------------------------------------- 

Variable N Mean Std Dev Minimum 95th Pctl 99th Pctl Maximum 

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

PM25_Lag0 958 14.730 8.022 1.767 30.709 41.083 52.609 

PM25_Lag1 958 14.401 7.806 2.217 29.092 41.734 52.740 

PM10_Lag0 958 32.327 13.828 8.944 57.759 79.189 96.427 

PM10_Lag1 958 29.677 12.684 9.705 52.876 66.191 89.593 

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

-------------------------------------------- center=63 --------------------------------------------- 

Variable N Mean Std Dev Minimum 95th Pctl 99th Pctl Maximum 

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

PM25_Lag0 1318 18.902 9.465 4.174 36.243 51.716 67.208 

PM25_Lag1 1318 18.726 9.670 4.100 37.136 55.534 66.425 

PM10_Lag0 1318 34.155 14.372 4.303 55.331 68.306 170.567 

PM10_Lag1 1318 33.475 17.525 4.609 54.597 79.765 201.213 

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

-------------------------------------------- center=64 --------------------------------------------- 

Variable N Mean Std Dev Minimum 95th Pctl 99th Pctl Maximum 

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

PM25_Lag0 1003 10.368 4.571 3.039 19.772 25.197 39.041 

PM25_Lag1 1003 10.087 4.226 2.567 18.352 25.308 39.189 

PM10_Lag0 1003 24.408 7.248 7.254 37.802 45.535 55.893 

PM10_Lag1 1003 23.757 6.976 8.647 35.200 44.096 56.148 

---------------------------------------------------------------------------------------------------- 
 EEAWHI Data for EHP 117:751-756 (2009) -- BY SITE (CENTER) 10 

 

-------------------------------------------- center=65 --------------------------------------------- 

 The MEANS Procedure 

Variable N Mean Std Dev Minimum 95th Pctl 99th Pctl Maximum 

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

PM25_Lag0 1344 10.120 6.570 2.214 23.329 38.258 52.715 

PM25_Lag1 1344 9.824 6.468 1.599 22.155 38.085 52.284 

PM10_Lag0 1344 23.380 9.809 5.498 41.097 54.847 93.552 

PM10_Lag1 1344 22.527 9.551 3.266 39.559 52.711 92.097 

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

-------------------------------------------- center=66 --------------------------------------------- 

Variable N Mean Std Dev Minimum 95th Pctl 99th Pctl Maximum 

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

PM25_Lag0 1368 8.702 5.283 1.295 18.662 27.115 48.150 

PM25_Lag1 1368 8.563 5.545 1.420 19.079 29.984 48.201 

PM10_Lag0 1368 23.824 9.998 5.672 43.414 53.365 72.097 

PM10_Lag1 1368 22.261 10.511 4.474 41.317 57.637 109.760 

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

-------------------------------------------- center=67 --------------------------------------------- 

Variable N Mean Std Dev Minimum 95th Pctl 99th Pctl Maximum 

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

PM25_Lag0 1064 10.162 4.383 1.478 18.243 23.798 28.508 

PM25_Lag1 1064 10.021 4.486 1.574 18.897 22.340 26.339 

PM10_Lag0 1064 32.232 9.949 7.502 51.812 62.738 80.842 

PM10_Lag1 1064 30.011 9.245 12.646 46.369 56.573 73.330 

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

-------------------------------------------- center=68 --------------------------------------------- 

Variable N Mean Std Dev Minimum 95th Pctl 99th Pctl Maximum 

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

PM25_Lag0 1396 18.715 9.433 4.683 36.656 53.379 69.148 

PM25_Lag1 1396 18.681 9.949 2.527 39.564 55.227 71.277 

PM10_Lag0 1396 32.277 14.717 4.938 52.425 86.193 182.843 

PM10_Lag1 1396 31.283 14.675 5.627 52.186 87.960 205.721 

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

-------------------------------------------- center=69 --------------------------------------------- 

Variable N Mean Std Dev Minimum 95th Pctl 99th Pctl Maximum 

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

PM25_Lag0 835 12.226 6.544 2.607 26.266 33.039 38.995 

PM25_Lag1 835 11.567 6.578 2.291 24.660 31.569 43.822 

PM10_Lag0 835 26.619 9.359 7.121 42.709 50.436 85.948 

PM10_Lag1 835 24.420 9.557 7.444 41.196 49.365 79.899 

---------------------------------------------------------------------------------------------------- 
 EEAWHI Data for EHP 117:751-756 (2009) -- BY SITE (CENTER) 11 

 

-------------------------------------------- center=70 --------------------------------------------- 

 The MEANS Procedure 

Variable N Mean Std Dev Minimum 95th Pctl 99th Pctl Maximum 

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

PM25_Lag0 249 14.977 6.319 4.312 26.368 33.530 52.076 

PM25_Lag1 249 15.268 6.159 0.459 27.393 33.593 36.933 

PM10_Lag0 249 28.521 9.778 11.314 46.821 55.784 63.434 

PM10_Lag1 249 26.829 9.402 9.331 42.214 53.116 64.163 

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

-------------------------------------------- center=71 --------------------------------------------- 

Variable N Mean Std Dev Minimum 95th Pctl 99th Pctl Maximum 

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

PM25_Lag0 305 17.013 7.300 5.021 30.590 33.387 34.388 

PM25_Lag1 305 16.274 7.350 4.280 30.187 36.391 45.345 

PM10_Lag0 305 29.374 9.936 10.827 48.398 51.829 54.604 

PM10_Lag1 305 26.991 9.498 9.500 44.599 49.403 63.326 

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

-------------------------------------------- center=72 --------------------------------------------- 

Variable N Mean Std Dev Minimum 95th Pctl 99th Pctl Maximum 

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

PM25_Lag0 553 14.479 7.175 2.731 28.027 38.044 41.358 

PM25_Lag1 553 14.062 7.345 2.346 29.283 38.668 43.980 

PM10_Lag0 553 27.838 11.031 7.973 47.761 60.536 75.167 

PM10_Lag1 553 25.693 10.423 6.736 45.381 59.853 73.940 

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

-------------------------------------------- center=73 --------------------------------------------- 

Variable N Mean Std Dev Minimum 95th Pctl 99th Pctl Maximum 

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

PM25_Lag0 600 11.374 4.959 3.345 20.112 26.334 33.568 

PM25_Lag1 600 11.553 4.971 2.324 21.564 26.258 28.351 

PM10_Lag0 600 31.908 11.554 10.377 53.878 64.531 74.705 

PM10_Lag1 600 30.898 14.695 7.585 55.363 67.971 153.862 

---------------------------------------------------------------------------------------------------- 
data=EEAWHI -- PM25_Lag0 >= 95th percentile for total 55,529 participants 12

 

------------------------------------------ PM25_Lag0p=95 ------------------------------------------- 

 The MEANS Procedure 

 Analysis Variable : PM25_Lag0 

 

 N Mean Std Dev Minimum Maximum 

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

 555 30.1948 0.4006 29.4998 30.9515 

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

------------------------------------------ PM25_Lag0p=96 ------------------------------------------- 

 Analysis Variable : PM25_Lag0 

 

 N Mean Std Dev Minimum Maximum 

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

 556 31.7431 0.5143 30.9520 32.7485 

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

------------------------------------------ PM25_Lag0p=97 ------------------------------------------- 

 Analysis Variable : PM25_Lag0 

 

 N Mean Std Dev Minimum Maximum 

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

 555 34.0783 0.8261 32.7520 35.6321 

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

------------------------------------------ PM25_Lag0p=98 ------------------------------------------- 

 Analysis Variable : PM25_Lag0 

 

 N Mean Std Dev Minimum Maximum 

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

 555 37.7670 1.3937 35.6356 40.6203 

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

------------------------------------------ PM25_Lag0p=99 ------------------------------------------- 

 Analysis Variable : PM25_Lag0 

 

 N Mean Std Dev Minimum Maximum 

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

 555 47.7448 6.1815 40.6213 70.0793 

 --------------------------------------------------------------------- 
data=EEAWHI -- PM25_Lag1 >= 95th percentile for total 55,529 participants 13

 

------------------------------------------ PM25_Lag1p=95 ------------------------------------------- 

 The MEANS Procedure 

 Analysis Variable : PM25_Lag1 

 

 N Mean Std Dev Minimum Maximum 

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

 555 29.8063 0.4232 29.1451 30.5902 

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

------------------------------------------ PM25_Lag1p=96 ------------------------------------------- 

 Analysis Variable : PM25_Lag1 

 

 N Mean Std Dev Minimum Maximum 

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

 556 31.4595 0.5466 30.5910 32.5086 

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

------------------------------------------ PM25_Lag1p=97 ------------------------------------------- 

 Analysis Variable : PM25_Lag1 

 

 N Mean Std Dev Minimum Maximum 

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

 555 33.8196 0.7959 32.5093 35.3443 

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

------------------------------------------ PM25_Lag1p=98 ------------------------------------------- 

 Analysis Variable : PM25_Lag1 

 

 N Mean Std Dev Minimum Maximum 

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

 555 37.4771 1.3671 35.3445 40.4772 

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

------------------------------------------ PM25_Lag1p=99 ------------------------------------------- 

 Analysis Variable : PM25_Lag1 

 

 N Mean Std Dev Minimum Maximum 

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

 555 47.9204 7.3583 40.4853 84.0445 

 --------------------------------------------------------------------- 
data=EEAWHI -- PM10_Lag0 >= 95th percentile for total 55,529 participants 14

 

------------------------------------------ PM10_Lag0p=95 ------------------------------------------- 

 The MEANS Procedure 

 Analysis Variable : PM10_Lag0 

 

 N Mean Std Dev Minimum Maximum 

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

 555 51.3718 0.5848 50.4074 52.4101 

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

------------------------------------------ PM10_Lag0p=96 ------------------------------------------- 

 Analysis Variable : PM10_Lag0 

 

 N Mean Std Dev Minimum Maximum 

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

 556 53.5426 0.6639 52.4127 54.8037 

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

------------------------------------------ PM10_Lag0p=97 ------------------------------------------- 

 Analysis Variable : PM10_Lag0 

 

 N Mean Std Dev Minimum Maximum 

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

 555 56.5195 1.0638 54.8100 58.5089 

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

------------------------------------------ PM10_Lag0p=98 ------------------------------------------- 

 Analysis Variable : PM10_Lag0 

 

 N Mean Std Dev Minimum Maximum 

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

 555 61.2184 1.8178 58.5233 64.8251 

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

------------------------------------------ PM10_Lag0p=99 ------------------------------------------- 

 Analysis Variable : PM10_Lag0 

 

 N Mean Std Dev Minimum Maximum 

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

 555 78.4775 17.8614 64.8448 200.9731 

 --------------------------------------------------------------------- 
data=EEAWHI -- PM10_Lag1 >= 95th percentile for total 55,529 participants 15

 

------------------------------------------ PM10_Lag1p=95 ------------------------------------------- 

 The MEANS Procedure 

 Analysis Variable : PM10_Lag1 

 

 N Mean Std Dev Minimum Maximum 

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

 555 49.7313 0.5145 48.8312 50.6154 

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

------------------------------------------ PM10_Lag1p=96 ------------------------------------------- 

 Analysis Variable : PM10_Lag1 

 

 N Mean Std Dev Minimum Maximum 

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

 556 51.7246 0.6785 50.6187 52.8757 

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

------------------------------------------ PM10_Lag1p=97 ------------------------------------------- 

 Analysis Variable : PM10_Lag1 

 

 N Mean Std Dev Minimum Maximum 

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

 555 54.6260 1.1199 52.8788 56.5412 

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

------------------------------------------ PM10_Lag1p=98 ------------------------------------------- 

 Analysis Variable : PM10_Lag1 

 

 N Mean Std Dev Minimum Maximum 

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

 555 59.8132 1.9938 56.5484 63.7589 

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

------------------------------------------ PM10_Lag1p=99 ------------------------------------------- 

 Analysis Variable : PM10_Lag1 

 

 N Mean Std Dev Minimum Maximum 

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

 555 79.6972 21.5399 63.7655 205.7209 

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