Although the point prevalence rates of ADHD have varied from 1.7% to 17.8%, the median prevalence of ADHD in a recent, review was 3%.8,57,58 Prevalence rates from recent studies of ADHD using DSM-IV criteria are shown in Table IV. In more recent, studies, the point prevalence of ADHD in 5- to 15-year-olds was 2.23%, 59 and the 12-month prevalence ranged between 2% and 8.7% for ages 4 to 17 years.14,15,60 Inclusion of recent studies increases the median prevalence rate of ADHD from 3% to 4%.9
