Reproductive, lifestyle, socioeconomic and anthropometric correlates of early menopause

OBJECTIVE: This study aimed to identify lifestyle, reproductive and socioeconomic correlates of early menopause (age <45 years) in a cross-sectional analysis of a population-based cohort of Japanese women. METHOD: = 6074). Data included age at menarche, menstrual pattern at age 20 years, educational attainment, marital status, parity, breastfeeding, smoking and body mass index (BMI). Multivariable logistic regression estimated odds ratios (ORs) with 95% confidence intervals (CIs). RESULTS: ) was associated with higher odds of early menopause (OR 3.49, 95% CI 1.91-6.37). CONCLUSION: In this cross-sectional analysis of a population-based cohort of Japanese women, lower educational attainment and never-married status were associated with early menopause. Women with menstrual irregularity and obesity may be at increased risk of early menopause.