Table 1.
Participant characteristics in 1999-2000
| Median (Q1, Q3)a | |
|---|---|
| Age (years) | 49.4 (47.4, 51.5) |
| BMI (kg/m2)b | 25.5 (22.3, 30.5) |
| N (%) | |
| Site | |
| Detroit area, MI | 225 (17.4%) |
| Boston, MA | 211 (16.3%) |
| Oakland, CA | 293 (22.7%) |
| Los Angeles, CA | 346 (26.8%) |
| Pittsburgh, PA | 218 (16.9%) |
| Race/ethnicity | |
| White | 667 (51.6%) |
| Black | 262 (20.3%) |
| Chinese | 168 (13.0%) |
| Japanese | 196 (15.2%) |
| Education | |
| High school or less | 222 (17.2%) |
| Some college | 409 (31.6%) |
| College degree | 328 (25.4%) |
| Postgraduate | 334 (25.8%) |
| Smoking | |
| Never | 817 (63.2%) |
| Past | 345 (26.7%) |
| Current | 131 (10.1%) |
| Menopausal status | |
| Pre- or peri menopausal | 913 (70.6%) |
| Natural/surgical menopause | 186 (14.4%) |
| Unknown due to hormone therapy | 194 (15.0%) |
| Obesity statusc | |
| Normal/underweight | 520 (40.2%) |
| Overweight | 395 (30.5%) |
| Obese | 378 (29.2%) |
Abbreviations: BMI, body mass index; Q1, first quartile; Q3, third quartile.
Descriptive data were based on the 1293 women who had complete data in 1999-2000.
BMI data came from the 1998-1999 follow-up visit for 1248 women, the 1997-1998 visit for 36 women, and the 1996-1997 visit for 9 women.
Obesity was defined with BMI using race-specific cut-points. For Black and White, normal/underweight: BMI < 25 kg/m2; overweight: 25 kg/m2 ≤ BMI < 30 kg/m2; obese: BMI ≥ 30 kg/m2. For Chinese and Japanese, normal/underweight: BMI < 23 kg/m2; overweight: 23 kg/m2 ≤ BMI < 27 kg/m2; obese: BMI ≥ 27 kg/m2.