Association between time of delivery and composite adverse outcomes in pregnancies complicated by hypertensive disorders.

<bold>Introduction: </bold>A potential manner to lower the morbidity with the hypertensive disoreders of pregancy is to explore the time of day of delivery.<bold>Objective: </bold>To compare composite neonatal adverse outcomes among term women with hypertensive disorders.<bold>Methods: </bold>This population-based cohort study used the U.S. vital statistics dataset from 2013 to 2017. Time of delivery was categorized into three shifts. The primary outcome was composite neonatal adverse outcome..<bold>Results: </bold>Compared to neonates delivered at the first shift, the risk of composite neonatal adverse outcome was higher at the third shift (aRR = 1.19, 95% CI = 1.13-1.25).<bold>Conclusion: </bold>the risk of composite neonatal adverse outcome is higher if the delivery occurs at the third (23:00-7:00) shift. [ABSTRACT FROM AUTHOR]