Table 1 Characteristics of unmarried women (n = 582) and married women (n = 1563)
|  | Unmarried(n = 582) | Married(n = 1563) | P valuea |
|---|---|---|---|
Age, mean (SD) | 33.8 (7.1) | 38.7 (6.8) | <0.001 |
Overweight/obesityb, n (%) | 69 (11.9) | 161 (10.3) | 0.30 |
Women’s educational attainment, n (%) |  | <0.001 | |
  ≥ University | 263 (45.2) | 454 (29.0) |  |
 College | 220 (37.8) | 725 (46.4) |  |
  ≤ High school | 99 (17.0) | 384 (24.6) |  |
Husbands’ educational attainment, n (%) | |||
  ≥ University |  | 927 (59.3) |  |
 College |  | 287 (18.4) |  |
  ≤ High school |  | 349 (22.3) |  |
Women’s and husbands’ educational attainment, n (%) | |||
  ≥ College & ≥ College |  | 995 (63.6) |  |
  ≥ College & ≤ High school |  | 184 (11.8) |  |
  ≤ High school & ≥ College |  | 219 (14.0) |  |
  ≤ High school & ≤ High school |  | 165 (10.6) |  |
Current working, no (%) | 525 (90.2) | 901 (57.7) | <0.001 |
Equivalent incomec, mean (SD) | 3131.1 (2097.9) | 3494.0 (1974.3) | <0.001 |
Poor dietary habits, n (%) | 134 (23.0) | 191 (12.2) | <0.001 |
Smoking status, n (%) | Â | Â | <0.001 |
 Never-smoker | 429 (73.7) | 1038 (66.4) |  |
 Ex-smoker | 69 (11.9) | 325 (20.8) |  |
 Current smoker | 84 (14.4) | 200 (12.8) |  |
Habitual exercise, n (%) | Â | Â | 0.25 |
  ≥ 1 day /week | 235 (40.4) | 582 (37.2) |  |
 Once /month | 101 (17.3) | 258 (16.5) |  |
 Seldom | 246 (42.3) | 723 (46.3) |  |