TABLE 1—
Characteristics of Participants Stratified by Race/Ethnicity: Multi-Ethnic Study of Atherosclerosis, 6 US Communities, 2000–2002
| Characteristic | White | Black | Hispanic | Chinese |
| No. of participants | 2361 | 1629 | 1266 | 665 |
| Gender, % | ||||
| Female | 52.0 | 54.8 | 51.9 | 50.1 |
| Male | 48.0 | 45.2 | 48.1 | 49.9 |
| Age, y, mean (SD) | 62.4 (10.1) | 61.9 (9.9) | 61.4 (10.3) | 61.9 (10.2) |
| Education, % | ||||
| < high school | 4.7 | 11.4 | 42.1 | 21.4 |
| High school | 17.0 | 19.0 | 21.3 | 16.1 |
| Some college/technical | 27.5 | 34.7 | 26.1 | 21.4 |
| College/graduate degree | 50.9 | 34.9 | 10.4 | 41.2 |
| Family income, $, % | ||||
| ≤ 24 999 | 15.2 | 26.7 | 46.5 | 45.4 |
| 25 000–49 999 | 26.3 | 29.8 | 33.4 | 23.3 |
| 50 000–74 999 | 19.9 | 19.3 | 10.5 | 12.3 |
| ≥ 75 000 | 36.3 | 16.9 | 7.8 | 18.5 |
| Unknown | 2.2 | 7.3 | 1.8 | 0.5 |
| Study site, % | ||||
| Winston-Salem, NC | 21.4 | 26.0 | 0.0 | 0.0 |
| New York, NY | 8.7 | 20.8 | 35.2 | 0.0 |
| Baltimore, MD | 19.6 | 28.5 | 0.0 | 0.0 |
| St. Paul, MN | 23.6 | 0.0 | 29.1 | 0.0 |
| Chicago, IL | 21.5 | 16.6 | 0.0 | 41.5 |
| Los Angeles, CA | 5.2 | 8.0 | 35.8 | 58.5 |
| Air pollution exposure, GM (95% CI) | ||||
| PM2.5 concentration, µg/m3 | 15.7 (15.6, 15.8) | 16.5 (16.4, 16.6) | 16.9 (16.8, 17.1) | 19.2 (19.0, 19.4) |
| NOX concentration, ppb | 33.6 (33.0, 34.4) | 43.3 (42.2, 44.4) | 58.7 (57.1, 60.4) | 58.5 (56.3, 60.8) |
Note. CI = confidence interval; GM = geometric mean; NOx = nitrogen oxides; PM2.5 = fine particulate matter.