Table 2: Baseline characteristics among 3 study groups.

Whole soy groupDaidzein groupPlacebo group value

Age (y) 0.464
Menopausal years (y) 0.977
BS Total PA (MET min/d) 0.450
 Job PA 0.574
 House PA 0.700
 Exercise PA 0.403
BS dietary intake
 Energy (kcal/d) 0. 341
 Protein (g/d) 0.373
 Fat (g/d) 0.386
 Isoflavones (mg/d) 0.852
Dietary intake at 6 month (not including supplements)
 Energy (kcal/d) 0.443
 Protein (g/d) 0.368
 Fat (g/d) 0.325
 Isoflavones (mg/d) 0.714
Job status0.128
 housewife37 (13.7%)46 (17.0%)54 (20.0%)
 Part-time job26 (9.6%)18 (6.7%)16 (5.9%)
 Full-time job27 (10.0%)26 (9.6%)20 (7.4%)
Ever use of lipid-lowering medication8 (7.5%)8 (7.5%)8 (7.5%) 0.915
Ever use of HRT9 (3.3%)13 (4.8%)19 (7.0%)0.112
Ever use of contraceptives 46 (17.0%)39 (14.4%)45 (16.7%)0.528
Passive smoking13 (4.8%)12 (4.4%)15 (5.6%)0.814
Regular alcohol drinking7 (2.6%)8 (3.0%)10 (3.7%)0.738
Regular coffee drinking34 (12.6%)37 (13.7%)32 (11.9%)0.742
Regular tea drinking73 (32.7%)73 (32.7%)77 (34.5%)0.662

Data are presented as mean ± standard deviation for continuous variables or number (%) for categorical variables. ANOVA test for continuous variables and Chi-square test for categorical variables. BS indicates baseline; PA indicates physical activity; HRT indicates hormone replacement treatment; Regular drinking means drinking alcohol, tea, or coffee more than 1 time per week. METs are multiples of resting metabolic rates and an MET minute is computed by multiplying the MET score of an activity by the minutes performed. Dietary nutrient intakes were calculated mainly based on the China Food Composition Table 2002 and 2004.