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Attention-Deficit/Hyperactivity Disorder in Children and Adults in England, 2000-2025: Recorded Prevalence and
Amber John1,2, Gavin R Stewart3, William Mandy2
1Department of Psychology, University of Liverpool, Liverpool, UK.
Background:
Over recent years, public awareness of ADHD has increased, alongside a rise in assessment referrals. There is urgent need for large-scale evidence on the prevalence and incidence of recorded ADHD to understand diagnostic coverage in England.
Methods:
Data were used from CPRD Aurum, a large longitudinal database of records from primary care practices across England. Point prevalence of recorded ADHD was estimated at a fixed index date (30.06.2025). Estimates of ADHD population prevalence from previous research were used as reference values to contextualise recorded diagnosis rates. Crude incidence of recorded ADHD per 1000 person-years was calculated overall. Annual incidence over the study period (2000-2024) was also calculated to understand trends in ADHD recording over time.
Findings:
Data from 3,536,476 to 42,241,788 patients were used for prevalence and incidence analyses respectively. Point prevalence of recorded ADHD was 1.19% (95%CI = 1.18-1.21), with higher prevalence in males than females, and decreasing prevalence with age. Comparisons of these estimates with documented population prevalence of ADHD showed that ADHD diagnosis rates in England remain substantially lower than published estimates of prevalence. The gap between recorded diagnosis rates and published reference prevalence estimates varied across groups, ranging from 28.71% (males aged 18-24) to 93.51% (males and females aged 65+). Crude incidence of recorded ADHD was 0.61 per 1000 person-years (95%CI = 0.61-0.61). Annual incidence rates increased markedly over the study period, with an acceleration of ADHD recording from 2020. Highest incidence was observed in males aged <18, and lowest incidence was in males and females aged 65+, for whom rates of ADHD remained stable and low across follow-up.
Interpretation:
Findings provide a detailed picture of current diagnostic coverage and temporal change. Results indicate that although ADHD diagnoses have increased substantially over the past decade, recorded ADHD diagnosis rates in England remain substantially lower than published estimates of ADHD prevalence, particularly in older age, suggesting potential under-recognition. Findings highlight an urgent need for diagnostic services that are accessible across the lifespan and adequately resourced to meet need.
Funding:
Medical Research Foundation (MRF-RGM-MH-24-114); British Academy (PFSS23∖230043).
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