In England, there is a discrepancy between the prevalence of attention-deficit/hyperactivity disorder (ADHD) ascertained from medical records and community surveys.  Cohort study using data from the Clinical Practice Research Datalink comprising 5196 children and young people aged 3-17 years with ADHD and 490 016 without, in 2012.


 In 2012, the recorded prevalence of ADHD was 1.06% (95% CI 1.03 to 1.09).  The low prevalence of ADHD in medical records may indicate considerable underdiagnosis. 
ADHD
Cohort study using data from the Clinical Practice Research Datalink comprising 5196 children and young people aged 3-17 years with ADHD and 490 016 without, in 2012.



Clinical Practice Research Datalink
In England, there is a discrepancy between the prevalence of attention-deficit/hyperactivity disorder (ADHD) ascertained from medical records and community surveys.  Cohort study using data from the Clinical Practice Research Datalink comprising 5196 children and young people aged 3-17 years with ADHD and 490 016 without, in 2012.


 In 2012, the recorded prevalence of ADHD was 1.06% (95% CI 1.03 to 1.09).  The low prevalence of ADHD in medical records may indicate considerable underdiagnosis. 
ADHD
In England, there is a discrepancy between the prevalence of attention-deficit/hyperactivity disorder (ADHD) ascertained from medical records and community surveys.  Cohort study using data from the Clinical Practice Research Datalink comprising 5196 children and young people aged 3-17 years with ADHD and 490 016 without, in 2012.


 In 2012, the recorded prevalence of ADHD was 1.06% (95% CI 1.03 to 1.09).  The low prevalence of ADHD in medical records may indicate considerable underdiagnosis. 
ADHD
In England, there is a discrepancy between the prevalence of attention-deficit/hyperactivity disorder (ADHD) ascertained from medical records and community surveys.  Cohort study using data from the Clinical Practice Research Datalink comprising 5196 children and young people aged 3-17 years with ADHD and 490 016 without, in 2012.


 In 2012, the recorded prevalence of ADHD was 1.06% (95% CI 1.03 to 1.09).  The low prevalence of ADHD in medical records may indicate considerable underdiagnosis. 
ADHD