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Table 3 Multivariable adjusted association between intimate partner violence and age at natural menopause (n = 6138)

From: The role of smoking in the relationship between intimate partner violence and age at natural menopause: a mediation analysis

  Age at natural menopause (ANM) (years)
Intimate partner violence <45
RRR (95% CI)
45–49
RRR (95% CI)
50–51
RRR (95% CI)
52–53
RRR (95% CI)
≥54
RRR (95% CI)
Continuous ANM
β (95% CI)
 Unadjusted model 1.54 (1.17–2.01) 1.06 (0.86–1.30) Reference 0.87 (0.70–1.07) 0.83 (0.68–1.01) −0.72 (−1.01 to −0.42)
 Model 1: + education level 1.49 (1.14–1.95) 1.04 (0.84–1.28) Reference 0.87 (0.70–1.08) 0.84 (0.69–1.02) −0.66 (−0.95 to −0.36)
 Model 2: Model 1 + income difficulties 1.39 (1.06–1.83) 1.01 (0.82–1.24) Reference 0.88 (0.71–1.09) 0.82 (0.67–1.00) −0.60 (−0.89 to −0.30)
 Model 3: Model 2 + menarche 1.38 (1.05–1.82) 1.00 (0.81–1.23) Reference 0.87 (0.70–1.09) 0.82 (0.67–1.00) −0.60 (−0.89 to −0.30)
 Model 4: Model 3 + parity 1.39 (1.05–1.83) 1.00 (0.81–1.24) Reference 0.87 (0.70–1.09) 0.82 (0.67–1.00) −0.62 (−0.92 to −0.32)
 Model 5: Model 4 + BMI 1.39 (1.05–1.83) 1.00 (0.81–1.24) Reference 0.87 (0.70–1.09) 0.82 (0.67–1.00) −0.62 (−0.92 to −0.33)
 Model 6: Model 5 + stress status 1.36 (1.03–1.80) 0.98 (0.80–1.22) Reference 0.88 (0.71–1.10) 0.82 (0.67–1.00) −0.60 (−0.90 to −0.29)
 Model 7: Model 6 + smoking status 1.20 (0.90–1.59) 0.95 (0.76–1.17) Reference 0.91 (0.73–1.13) 0.84 (0.68–1.03) −0.39 (−0.69 to −0.08)
  1. Multinominal logistic regression models were used to estimate relative risk ratio (RRR) and 95% confidence intervals (CI) for the categorical ANM. Linear regression models were used to estimate β (95% CI) for the continuous ANM