Factors | Unadjusted | Model 2 |
---|
OR (95% CI) | OR (95% CI) |
---|
Breastfeeding experience (dichotomized) |
 Non-breastfeed | 1 | 1 |
 Breastfeed ≥1 mth | 1.91 (1.23, 2.96)b | 2.61 (1.42, 4.82)b |
Breastfeeding duration (categorized) |
 None | 1 | 1 |
 1–24 mths | 1.28 (0.77, 2.11) | 2.39 (1.23, 4.64)c |
 25–48 mths | 1.53 (0.94, 2.48) | 2.35 (1.25, 4.41)b |
 ≥ 49 mths | 2.33 (1.58, 3.63)a | 3.07 (1.63, 5.79)b |
 p for trend | <.001 | 0.005 |
- Model 2 was adjusted by BMI, household income, smoking, alcohol consumption, physical activity, diabetes, hypertension, children, abortion, hormone replacement therapy. (In reselection of subjects aged over 60 years, since all the subjects were in menopause stage, the variables of age and menopausal status were removed from the confounders)
- OR odds ratio, 95% CI 95% confidence interval
- a p < 0.001, b p < 0.01, c p < 0.05