Association of timing of birth with mortality among preterm infants born in Canada

ObjectiveTo assess the association between time of birth and mortality among preterm infants.Study designPopulation-based study of infants born 22–36 weeks gestation (GA) in Canada from 2010 to 2015 (n = 173 789). Multivariable logistic regression models assessed associations between timing of birth and mortality.ResultAmong infants 22–27 weeks GA, evening birth was associated with higher mortality than daytime birth (adjusted odds ratio [AOR] …