| Predictors | Model 1 | Model 2 | OR | 95% CI | OR | 95% CI |
| Employment | | | | | Housekeeper/unemployed | 1.00 | ref | 1.00 | ref | Other | 0.53* | (0.46, 0.61) | 0.71* | (0.60, 0.84) | Mice | | | | | No mice reported | 1.00 | ref | 1.00 | ref | Mice in neighborhood | 0.97 | (0.80, 1.16) | 0.91 | (0.73, 1.13) | Campaign to control mice in neighborhood | 1.60* | (1.36, 1.87) | 1.47* | (1.10, 1.98) | Control mice in household | 1.19 | (0.92, 1.52) | 1.63* | (1.36, 1.97) | Parity | 1.62* | (1.54, 1.70) | 1.75* | (1.62, 1.90) | Age at first birth | 0.99 | (0.98, 1.01) | — | — | History of contraception | | | | | No | 1.00 | ref | 1.00 | ref | Yes | 2.80* | (2.42, 3.24) | 2.73* | (2.07, 3.61) | Menopausal status | | | | | Pre- | 1.00 | ref | 1.00 | ref | Post- | 0.66* | (0.54, 0.81) | 0.62* | (0.49, 0.79) | Age at menopause | 1.02 | (0.99, 1.05) | — | — | Breastfed all children | | | | | No | 1.00 | ref | 1.00 | ref | Yes | 3.04* | (2.64, 3.50) | 3.76* | (2.69, 5.25) | Breastfed at least one child | | | | | No | 1.00 | ref | — | — | Yes | 4.89* | (4.11, 5.81) | — | — | Breastfed with both breasts | | | | | Yes | 1.00 | ref | 1.00 | ref | No | 2.75* | (2.32, 3.27) | 4.40* | (3.39, 5.72) | Did not breastfeed | 0.30* | (0.25, 0.36) | 1.54* | (1.07, 2.21) | Wears a bra | | | | | No | 1.00 | ref | 1.00 | ref | Yes | 0.68* | (0.58, 0.79) | 0.56* | (0.47, 0.67) | Proximity to pregnancy/lactation | | | | | No proximity | 1.00 | ref | 1.00 | ref | Problem during pregnancy, lactation, or within 6 months after lactation | 1.20* | (1.04, 1.38) | 1.67* | (1.32, 2.11) | Parity* contraception | — | — | 0.86 | (0.80, 0.93) | Parity* breastfed all | — | — | 0.80 | (0.73, 0.87) | Lactation problem*breastfed with both breasts | | | | | Did not use both breasts | — | — | 0.32 | (0.22, 0.46) | Did not breastfeed | — | — | 0.46 | (0.31, 0.68) |
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