Preterm or early term birth and risk of attention-deficit/hyperactivity disorder : a national cohort and co-sibling study
Purpose: To examine risks of attention-deficit/hyperactivity disorder (ADHD) in preterm and early term birth survivors, and potential sex-specific differences. Methods: A national cohort study was conducted of all 4061,795 singletons born in Sweden in 1973–2013 who survived infancy, followed up for ADHD identified from nationwide diagnoses and medications through 2018. Poisson regression was used