alexa Teenage pregnancy and risk of adverse perinatal outcomes associated with first and second births: population based retrospective cohort study.
Reproductive Medicine

Reproductive Medicine

Journal of Pregnancy and Child Health

Author(s): Smith GC, Pell JP

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Abstract OBJECTIVE: To determine whether first and second births among teenagers are associated with increased risk of adverse perinatal outcomes after confounding variables have been taken into account. DESIGN: Population based retrospective cohort study using routine discharge data for 1992-8. SETTING: Scotland. MAIN OUTCOME MEASURES: Stillbirth, preterm delivery, emergency caesarean section, and small for gestational age baby among non-smoking mothers aged 15-19 and 20-29. RESULTS: The 110 233 eligible deliveries were stratified into first and second births. Among first births, the only significant difference in adverse outcomes by age group was for emergency caesarean section, which was less likely among younger mothers (odds ratio 0.5, 95\% confidence interval 0.5 to 0.6). Second births in women aged 15-19 were associated with an increased risk of moderate (1.6, 1.2 to 2.1) and extreme prematurity (2.5, 1.5 to 4.3) and stillbirth (2.6, 1.3 to 5.3) but a reduced risk of emergency caesarean section (0.7, 0.5 to 1.0). CONCLUSIONS: First teenage births are not independently associated with an increased risk of adverse pregnancy outcome and are at decreased risk of delivery by emergency caesarean section. However, second teenage births are associated with an almost threefold risk of preterm delivery and stillbirth.
This article was published in BMJ and referenced in Journal of Pregnancy and Child Health

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