Additional file 1 of Risk factors for natural menopause before the age of 45: evidence from two British population-based birth cohort studies

Additional file 1: Supplemetary material. Risk factors for natural menopause before the age of 45: evidence from two British population-based birth cohort stuides. Harmonised variables used in the analysis (Table 1 Menopause status); classification of women into menopause status (Table 2.1, 2.2 Menopause status); descriptive statistics for all variables included in the analysis for each cohort separately (Table 3 Descriptive statistics); univariate and multivariate study specific (Tables 5,6 Study specific) and pooled (Table 4 Pooled models) regression models.