The Meta-Analysis of Epidemiological Studies of Attention Deficit/Hyperactivity Disorder

the aim of the present research was the meta-analysis of the epidemiological studies of Attention Deficit/Hyperactivity Disorder (ADHD) in Iranian adults. Data collected from 10 studies conducted from 2001-2011, included 5028 participants and was analyzed using binomial effect size display and inverse variance for fixed effect model (Wolf, 1986; Hooman, 2008). Findings revealed that the mixed model of the effect was 0.029, which was reduced to 0.028 by omitting two of the research studies. The general prevalence of ADHD after eliminating two of the studies and using sensitivity analysis was 6.76%. The prevalence rate of ADHD in males and females after excluding one of the research studies and using sensitivity analysis were 3.94% and 1.93%, respectively. Further meta-analysis showed that the prevalence of attention deficit, hyperactivity – impulsivity and combined types of ADHD were 4.72%, 3.54% and 3.84%, respectively. It can be concluded that the proportion of ADHD in females and males and the prevalence of ADHD types in Iranian adults are in accordance with many other research studies.