… Additional factors that may well influence prevalence rates include source of information
and assessment of clinical impairment. In conclusion, our findings suggest that population …

… and the true prevalence rate of the disorder, we conducted a systematic review to estimate
the prevalence of ADHD and to examine factors that may explain the variations in prevalence. …

… "attention deficit disorder or attention deficit hyperactive … rate increases noted in this report
represent an average for the 4-year period between surveys rather than observed annual rate …

… We estimated annual prevalence rates for diagnosis of ADHD in adults and children by
race/… changes of annual prevalence rates over time by race/ethnicity during the study period. …

… Our finding of a pooled prevalence rate for adult ADHD of 2.5% (95% CI 2.1–3.1) seems
to be conservative in the context of the research discussed above. Our pooled …

… Epidemiologic studies revealed prevalence rates generally ranging from 4… prevalence rates
between 4% and 12% (median: 5.8%). The investigation reporting the outlier prevalence rate …

… prevalence rates are a bit lower than the prevalence rates of ADHD in children (3–7%)1 and
adults (4.4%).In contrast to most prevalence … In our study, a similar order of prevalence rates …

… was conducted to estimate the prevalence of attention-deficit/hyperactivity disorder (…
attention deficit-/hyperactivity disorder and hyperkinetic disorder? Parent-based prevalence rates …

… of prevalence rates reported from research samples over the past 25 years: 5.2%. This overall
rate … Such nonreferred samples are essential for estimating the population prevalence of …

… , this paper will also report on the variation in rates by age, sex and urbanrural status, the
prevalence of the sub-types of ADDH outlined above and the degree of overlap with other …