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Table 1 Characteristics of unmarried women (n = 582) and married women (n = 1563)

From: Distinct association between educational attainment and overweight/obesity in unmarried and married women: evidence from a population-based study in Japan

  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 (%)    <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 (%)    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)  
  1. aObtained using Student’s t test for continuous variables and the chi-squared test for categorical variables, comparing unmarried and married women
  2. bBody mass index ≥25.0 kg/m2
  3. cThousand Japanese yen (/year)