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Table 2 Odds ratios for overweight/obesity according to education among unmarried women (n = 582)

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

  Overweight/obesity Model 1 Model 2 Model 3
% OR (95% CI) OR (95% CI) OR (95% CI)
Women’s educational attainment
  ≥ University 7.6 1.00 1.00 1.00
 College 10.9 1.15 (0.60–2.20) 1.15 (0.59–2.23) 1.18 (0.60–2.31)
  ≤ High school 25.3 3.08 (1.57–6.03) 3.21 (1.59–6.51) 3.04 (1.45–6.38)
Work status
 Working 11.1 1.00 1.00 1.00
 Not working 19.3 1.92 (0.93–3.96) 2.30 (1.06–5.00) 2.10 (0.95–4.66)
Equivalent income
 4th quartile (highest) 10.5 1.00 1.00 1.00
 3rd quartile 14.4 1.79 (0.85–3.75) 1.61 (0.75–3.44) 1.63 (0.75–3.53)
 2nd quartile 8.3 0.89 (0.39–2.06) 0.62 (0.26–1.51) 0.59 (0.24–1.45)
 1st quartile 13.6 1.39 (0.65–2.97) 0.97 (0.44–2.17) 1.02 (0.45–2.31)
Dietary habits
 Good 9.8 1.00   1.00
 Poor 18.7 2.56 (1.47–4.47)   2.41 (1.32–4.39)
Smoking status
 Never-smoker 11.2 1.00   1.00
 Ex-smoker 10.1 0.81 (0.35–1.89)   0.62 (0.25–1.52)
 Current smoker 16.7 1.39 (0.72–2.69)   0.89 (0.43–1.85)
Habitual exercise
  ≥ 1 day/week 12.3 1.00   1.00
 Once/month 10.9 0.99 (0.47–2.10)   1.04 (0.48–2.27)
 Seldom 11.8 0.96 (0.55–1.68)   0.86 (0.47–1.55)
  1. OR odds ratio, 95% CI 95% confidence interval
  2. Model 1: adjusted for age
  3. Model 2: adjusted for age, work status and equivalent income
  4. Model 3: adjusted for age, work status, equivalent income, dietary habits, smoking status, and habitual exercise