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Table 1 Characteristics of the Study Population, SWAN Cohort, 1999–2004

From: Association between coarse particulate matter and inflammatory and hemostatic markers in a cohort of midlife women

  Detroit, MI Chicago, IL Oakland, CA Los Angeles, CA Newark, NJ Pittsburgh, PA
n = 208 n = 372 n = 343 n = 144 n = 250 n = 377
Race/Ethnicity (%)
 African American 81 52 34
 Chinese 58
 Hispanic 70
 Japanese 81
 White 19 48 42 19 30 66
Education (%)
  ≤ High school 36 12 19 20 54 23
 Some college 42 30 23 29 22 34
  ≥ College 17 58 58 51 20 43
Total number of visits 804 1420 1454 299 486 1519
Menopausal status (%)
 Pre 4 5 7 5 4 7
 Early peri 35 41 37 41 51 34
 Late peri 12 10 10 9 11 11
 Post 36 37 34 35 26 32
 Unknown 12 7 13 10 9 15
Body Mass Index (%)
  < 25, normal 12 20 58 63 22 28
 25–30, overweight 23 32 22 23 32 32
  >  30, obese 63 40 18 14 39 40
Alcohol consumption (%)
 Low 65 37 60 49 59 49
 Medium 17 27 20 22 24 31
 High 14 23 18 28 12 19
Current smoker (%) 29 15 3 9 16 14
Diagnosed diabetes (%) 20 8 5 5 10 7
Any CVD event (%) 3.8 0.4 1.2 0 0.4 1.8
  1. Note: percentages do not always add up to 100% because of missing data