Association of Relative Age in the School Year With Diagnosis of Intellectual Disability, Attention-Deficit/Hyperactivity Disorder, and Depression.

ABSTRACT:

Importance

Young relative age within the school year has previously been associated with attention-deficit/hyperactivity disorder (ADHD) diagnosis and, based on limited evidence, diagnosis of intellectual disability. No study to date has examined the association between relative age and diagnosis of depression.

Objectives

To estimate the associations with intellectual disability and ADHD and investigate a potential novel association between relative age and childhood depression.

Design, setting, and participants

This population-based cohort study of 1 042 106 children aged 4 to 15 years used electronic record data collected before January 3, 2017, from more than 700 general practices contributing to the UK Clinical Practice Research Datalink. Multivariable Cox proport

SUBMITTER: Root A 

PROVIDER: S-EPMC6763997 | biostudies-literature | 2019 Nov

REPOSITORIES: biostudies-literature