Five-minute Apgar score as a marker for developmental vulnerability at 5 years of age

ObjectiveTo assess the relationship between the 5 min Apgar score and developmental vulnerability at 5 years of age.DesignPopulation-based retrospective cohort study.SettingManitoba, Canada.ParticipantsAll children born between 1999 and 2006 at term gestation, with a documented 5 min Apgar score.Exposure5 min Apgar score.Main outcome measuresChildhood development at 5 years of age, expressed as vulnerability (absent vs present) on five domains of the Early Development Instrument: physical health, social competence, emotional maturity, language and cognitive development, and communication skills.ResultsOf the 33 883 children in the study, most (82%) had an Apgar score of 9; 1% of children had a score