Table 1.
NIH-AARP participants and PM2.5 exposure characteristics
| Participants |
PM2.5 Exposure (year 2000) |
||||
|---|---|---|---|---|---|
| Participant category | n | % | Median | IQR | IQR% a |
| Total | 565 477 | 100 | 13.3 | 4.0 | 30.3 |
| Age at entry (years) | |||||
| <57.90 | 141 370 | 25 | 13.5 | 3.9 | 28.6 |
| 57.90-<62.79 | 141 369 | 25 | 13.4 | 4.0 | 29.6 |
| 62.79-<66.73 | 141 369 | 25 | 13.3 | 4.1 | 30.9 |
| 66.73-<72.00 | 141 369 | 25 | 13.1 | 4.2 | 32.1 |
| Sex | |||||
| Male | 339 133 | 60 | 13.3 | 4.0 | 30.0 |
| Female | 226 344 | 40 | 13.4 | 4.1 | 30.6 |
| Race/ethnicity | |||||
| Non-Hispanic White | 516 052 | 91.2 | 13.2 | 4.0 | 30.2 |
| Non-Hispanic Black | 21 970 | 3.9 | 15.0 | 3.1 | 20.9 |
| Hispanic | 10 549 | 1.9 | 13.2 | 6.4 | 48.5 |
| Asian/Pacific Islander/Native | 9137 | 1.6 | 14.0 | 5.8 | 41.3 |
| Unknown | 7769 | 1.4 | 13.6 | 4.2 | 30.8 |
| Education | |||||
| <12 years | 36 001 | 6.4 | 13.3 | 4.1 | 30.4 |
| High school | 111 368 | 19.7 | 13.4 | 3.9 | 29.4 |
| Some college | 55 560 | 9.8 | 13.2 | 4.3 | 32.6 |
| Other post-high school | 130 135 | 23 | 13.2 | 4.1 | 31.1 |
| College graduate | 215 464 | 38.1 | 13.4 | 3.9 | 29.2 |
| Unknown | 16 949 | 3 | 13.3 | 4.2 | 31.5 |
| Marital status | |||||
| Married | 389 195 | 68.8 | 13.2 | 4.0 | 30.1 |
| Never married | 144 824 | 25.6 | 13.5 | 4.2 | 31.0 |
| Other | 26 739 | 4.7 | 14.0 | 4.0 | 28.7 |
| Unknown | 4719 | 0.8 | 13.4 | 4.1 | 30.7 |
| Body mass index (kg/m2) | |||||
| <18.5 | 4776 | 0.8 | 13.4 | 4.1 | 30.8 |
| 18.5-<25.0 | 189 353 | 33.5 | 13.3 | 4.1 | 30.7 |
| 25.0-<30.0 | 234 380 | 41.4 | 13.3 | 4.0 | 30.2 |
| 30-<35 | 86 874 | 15.4 | 13.4 | 4.0 | 29.9 |
| 35+ | 34 737 | 6.1 | 13.6 | 3.9 | 29.0 |
| Unknown | 15 357 | 2.7 | 13.4 | 4.1 | 30.4 |
| Alcohol (drinks per day) | |||||
| None | 140 621 | 24.9 | 13.5 | 4.0 | 29.8 |
| <1 | 294 102 | 52 | 13.4 | 4.0 | 29.4 |
| 1-<2 | 63 840 | 11.3 | 13.0 | 4.1 | 31.7 |
| 2-<3 | 21 389 | 3.8 | 12.9 | 4.2 | 32.4 |
| 3-<5 | 20 821 | 3.7 | 12.8 | 4.2 | 32.9 |
| 5+ | 24 704 | 4.4 | 12.8 | 4.3 | 33.5 |
| Smoking status | |||||
| Never | 196 171 | 34.7 | 13.5 | 3.9 | 28.9 |
| Former, ≤1 pack/day | 150 486 | 26.6 | 13.3 | 4.0 | 30.3 |
| Former, >1 pack/day | 118 803 | 21 | 13.1 | 4.1 | 31.6 |
| Current, ≤1 pack/day | 50 393 | 8.9 | 13.4 | 4.2 | 31.0 |
| Current, >1 pack/day | 27 871 | 4.9 | 13.1 | 4.2 | 32.3 |
| Unknown | 21 753 | 3.8 | 13.4 | 4.0 | 30.1 |
| State/city | |||||
| California | 174 860 | 30.9 | 13.8 | 6.8 | 49.0 |
| Florida | 121 593 | 21.5 | 10.3 | 1.8 | 17.3 |
| Pennsylvania | 84 979 | 15 | 14.8 | 1.8 | 12.2 |
| New Jersey | 71 014 | 12.6 | 13.0 | 2.0 | 15.8 |
| North Carolina | 46 937 | 8.3 | 14.4 | 2.3 | 15.7 |
| Louisiana | 21 710 | 3.8 | 12.8 | 2.4 | 18.7 |
| Detroit | 28 573 | 5.1 | 14.7 | 1.9 | 12.6 |
| Atlanta | 15 811 | 2.8 | 18.0 | 1.6 | 9.0 |
| Median income ($1000) in census tract | |||||
| Quartile 1 (<37.07) | 141 370 | 25.0 | 12.5 | 4.7 | 37.4 |
| Quartile 2 (≥37.07 and <48.55) | 141 369 | 25.0 | 13.5 | 4.5 | 33.5 |
| Quartile 3 (≥48.55 and <65.35) | 141 369 | 25.0 | 13.7 | 3.7 | 27.3 |
| Quartile 4 (≥65.35) | 141 369 | 25.0 | 13.4 | 3.2 | 23.7 |
| Percentage not completing high school in census tract | |||||
| Quartile 1 (<7.8%) | 141 370 | 25.0 | 13.4 | 3.6 | 27.1 |
| Quartile 2 (≥7.8% and <13.5%) | 141 369 | 25.0 | 13.1 | 3.8 | 29.0 |
| Quartile 3 (≥13.5% and <21.2%) | 141 369 | 25.0 | 13.2 | 4.2 | 31.7 |
| Quartile 4 (≥21.2%) | 141 369 | 25.0 | 13.8 | 4.5 | 32.6 |
| Distance to AQS sites | |||||
| < 25 km | 432 610 | 76.5 | 14.0 | 3.8 | 27.5 |
| ≥25 and <50 km | 88 414 | 15.6 | 11.5 | 3.4 | 29.7 |
| ≥50 and 100 km | 41 206 | 7.3 | 10.8 | 2.7 | 24.8 |
a
IQR%: (interquartile range/median PM2.5) x 100.