Table 1:
Baseline characteristics of participants in Study of Women’s Health Across the Nation (SWAN), for hormone initiation and continuation analytic samples
| Mean (SD) or No. (%) of Participants | ||
|---|---|---|
| Characteristic | Participants in initiation analyses (n=3,018 women contributing 28,715 observations) | Participants in continuation analyses (n=990 women contributing 4,251 observations) |
| Age, y | 46.34 (2.69) | 46.8 (2.7) |
| Race/ethnicity: | ||
| White | 1432 (47.45) | 569 (57.5) |
| Black | 865 (28.66) | 223 (22.5) |
| Japanese | 271 (8.98) | 87 (8.8) |
| Chinese | 243 (8.05) | 76 (7.7) |
| Hispanic | 207 (6.86) | 35 (3.5) |
| Educational level: | ||
| ≤ high school | 705 (23.48) | 174 (17.6) |
| Some college | 976 (32.51) | 318 (32.2) |
| College or beyond | 1321 (44.00) | 495 (50.2) |
| Missing | 16 | 3 |
| Site, white participants only: | ||
| Detroit, MI | 203 (14.18) | 70 (12.3) |
| Boston, MA | 226 (15.78) | 79 (13.9) |
| Chicago, IL | 202 (14.11) | 75 (13.2) |
| Oakland, CA | 201 (14.04) | 83 (14.6) |
| Los Angeles, CA | 210 (14.66) | 114 (20.0) |
| Newark, NJ | 104 (7.26) | 26 (4.6) |
| Pittsburgh, PA | 286 (19.97) | 122 (21.4) |
| Menopause status: | ||
| Premenopausal | 1614 (53.71) | 463 (46.9) |
| Early perimenopausal | 1391 (46.29) | 524 (53.1) |
| Missing | 13 | 3 |
| Days in past 2 weeks with VMS: | ||
| 0 | 1825 (60.81) | 543 (55.0) |
| 1 – 5 | 848 (28.26) | 300 (30.4) |
| 6+ | 328 (10.93) | 144 (14.6) |
| Missing | 17 | 3 |