Table 1.
Characteristics of Study of Women's Health Across the Nation (SWAN) Phytoestrogen Study participants in the analytic sample a
| Participant Characteristics | Values in Entire Sample and in Each Racial/Ethnic Group b | ||||
|---|---|---|---|---|---|
|
| |||||
| All Participants (N=862) | Black (N=242) | White (N=384) | Chinese (N=117) | Japanese (N=119) | |
| Categorical Variables: | |||||
| Menopause transition stage | |||||
| Premenopausal | 58.4 | 55.7 | 55.1 | 68.4 | 64.9 |
| Early perimenopausal | 41.6 | 44.3 | 44.9 | 31.6 | 35.1 |
| Supplemental calcium use (% yes) | 43.8 | 35.2 | 47.4 | 33.6 | 60.3 |
| Current smoking | 16.6 | 27.7 | 16.4 | 1.7 | 9.5 |
| Continuous Variables: | |||||
| Age, years | 46.2 (2.6) | 46.1 (2.5) | 46.0 (2.6) | 46.4 (2.5) | 46.7 (2.4) |
| Age at final menstrual period, years | 51.5 (2.4) | 51.3 (2.4) | 51.5 (2.6) | 51.6 (2.3) | 52.13 (2.2) |
| Body mass index (kg/m2) | 27.5 (7.0) | 31.0 (7.3) | 28.00 (6.9) | 23.1 (4.1) | 22.7 (3.1) |
| Total dietary kilocalories | 1821.8 (628.3) | 1878.8 (730.6) | 1816.8 (572.8) | 1781.4 (648.5) | 1765.4 (560.3) |
| Bone mineral density, lumbar spine (g/cm2) | 1.078 (0.139) | 1.140 (0.146) | 1.064 (0.130) | 1.041 (0.127) | 1.019 (0.115) |
| Bone mineral density, femoral neck (g/cm2) | 0.846 (0.135) | 0.942 (0.138) | 0.827 (0.115) | 0.773 (0.101) | 0.760 (0.096) |
a
Except for age at final menstrual period, values in table are from SWAN cohort baseline.
b
For categorical variables, values shown are percents; for continuous variable, values shown are means and standard deviations.