Preterm or early term birth and risk of attention-deficit/hyperactivity disorder: a national cohort and co-sibling study.

ABSTRACT:

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 to compute prevalence ratios (PRs), adjusting for sociodemographic and perinatal factors. Co-sibling analyses assessed for confounding by unmeasured shared familial (genetic or environmental) factors.

Results

ADHD prevalences by gestational age at birth were 12.1% for extremely preterm (22-27 weeks), 7.0% for moderately preterm (28-33 weeks), 5.7% for late preterm (34-36 weeks)

SUBMITTER: Crump C 

PROVIDER: S-EPMC10538375 | biostudies-literature | 2023 Oct

REPOSITORIES: biostudies-literature