Risk factor associations for ADHD, ASD diagnoses weakened from 2012-2022
A Danish nationwide registry-based case-control study followed children born 1994-2022 and compared 71,317 individuals diagnosed with ADHD or ASD between 2012-2022 with 713,170 matched controls. The study found that associations between prediagnostic characteristics (parental, perinatal, and socioeconomic factors) and later ADHD or ASD diagnosis attenuated over the study period, with the effect more pronounced for ADHD than ASD and among those diagnosed at ages 10 to 17. The authors state these findings suggest rising diagnostic rates may reflect changes in diagnostic practices or health care capacity rather than changes in underlying risk, and caution against interpreting this as evidence that the conditions have become less impairing at the individual level.
Most relevant for: Clinicians involved in diagnosing or researching ADHD and autism spectrum disorder in children and adolescents.
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