Figure legend
Figure 1: The estimates of cumulative survival time from 40 years of age onward among women with distinct number of live births.
Figure 2: Frailty index, △KDM-biological age, HD adjusted for multiple covariates. Adjusted covariates included age, race, education, Townsend deprivation index, BMI, smoking statues, drink, moderrate activity, diabetes, hypertension, asthma, emphysema and chronic bronchitis, use of oral contraceptive pills, history of stillbirth, spontaneous miscarriage or termination, and menarche, age at menopause (last menstrual period), length of menstrual cycle at baseline.
Supplementary Figure 1: Flow chart of study population.
Supplementary Figure 2: RCS analysis of the relationship between the number of live births and premature all-cause mortality. The model was adjusted for age, race, education, Townsend deprivation index, BMI, smoking statues, drink, moderrate activity, diabetes, hypertension, asthma, emphysema and chronic bronchitis, use of oral contraceptive pills, history of stillbirth, spontaneous miscarriage or termination, and menarche, age at menopause (last menstrual period), length of menstrual cycle at baseline.