biostudies-literatureUnknown18(7)Lee KHAdolescent pregnancies, a risk factor for obstetric complications and perinatal mortality, are driven by child marriage in many regions of South Asia. We used data collected between 2017-2019 from 56,155 married adolescents and women in a health and demographic surveillance system to present a population-level description of historical trends in child marriage from 1990-2019 as well as epidemiologic associations between maternal age and pregnancy outcomes in Baliakandi, a rural sub-district of Bangladesh. For pregnancies identified between 2017-2019, we used Kaplan-Meier estimates to examine timing of first pregnancies after first marriage and multinomial logistic regression to estimate associations between maternal age and perinatal death. We described the frequency of self-reported obstePloS onee0288746https://www.ebi.ac.uk/biostudies/studies/S-EPMC10355438biostudies-literatureChild marriage in rural Bangladesh and impact on obstetric complications and perinatal death: Findings from a health and demographic surveillance system.PMC10355438Bari SEl Arifeen SParveen SChowdhury AIRahman QSCunningham SAGurley ESLee KHfalseChild marriage in rural Bangladesh and impact on obstetric complications and perinatal death: Findings from a health and demographic surveillance system.Adolescent pregnancies, a risk factor for obstetric complications and perinatal mortality, are driven by child marriage in many regions of South Asia. We used data collected between 2017-2019 from 56,155 married adolescents and women in a health and demographic surveillance system to present a population-level description of historical trends in child marriage from 1990-2019 as well as epidemiologic associations between maternal age and pregnancy outcomes in Baliakandi, a rural sub-district of Bangladesh. For pregnancies identified between 2017-2019, we used Kaplan-Meier estimates to examine timing of first pregnancies after first marriage and multinomial logistic regression to estimate associations between maternal age and perinatal death. We described the frequency of self-reported obste2023-01-01T00:00:00Z20232025-04-22T13:28:00.816Z2025-04-22T13:28:00.816ZS-EPMC103554383746722610.1371/journal.pone.0288746