Table 1.
Participant characteristics at enrollment (N = 1194)
| Age, years, M (SD) | 65.13 (7.08) |
|---|---|
| Race/ethnicity, N (%) | |
| White | 662 (55.44) |
| Black | 310 (25.96) |
| Hispanic | 222 (18.59) |
| Education, N (%) | |
| High school or less | 539 (45.68) |
| College graduate | 401 (33.98) |
| Greater than college | 240 (20.34) |
| BMI, M (SD) | 29.69 (6.24) |
| Hysterectomy, yes, N (%) | 276 (23.12) |
| Sleep disturbance (WHIIRS, high, ≥10), N (%) | 269 (23.21) |
| Years since menopause, M (SD) | 17.08 (9.44) |
| Smoking pack-years, N (%) | |
| 0 | 646 (55.69) |
| 0-≤10 | 205 (17.67) |
| >10 | 309 (26.64) |
| Hot flashes at enrollment, N (%) | |
| None | 842 (70.94) |
| Mild | 221 (18.62) |
| Moderate | 96 (8.09) |
| Severe | 28 (2.36) |
| Night sweats at enrollment, N (%) | |
| None | 784 (66.27) |
| Mild | 280 (23.67) |
| Moderate | 94 (7.95) |
| Severe | 25 (2.11) |
| VMS timing group, N (%) | |
| None | 407 (39.82) |
| Early | 221 (21.62) |
| Late | 113 (11.06) |
| Persistent | 281 (27.50) |
Abbreviations: BMI, body mass index; VMS, vasomotor symptoms; WHIIRS, Womens Health Initiative Insomnia Rating Scale.