User:Zpeeran/Epidemiology of attention deficit hyperactive disorder

Asia
The estimated prevalence of childhood ADHD in Asia is under 5%, which is similar to its prevalence in South America, Europe, North America, and Oceania. The estimated prevalence of adult ADHD is 25.66% in the South-East Asia Region and 9.67% in the Western Pacific Region.

China
Utilizing data from the WHO World Mental Health (WMH) Surveys, one study estimated the prevalence childhood ADHD in China (Shenzhen) to be 0.7% and the adult ADHD prevalence to be 1.8%. This study also determined that for adults in China (Shenzhen) with existing ADHD, 62.8% had a history of childhood ADHD. Another study utilizing systematic review estimated the prevalence of childhood ADHD in China, Hong Kong, and Taiwan to be 6.3%, with the individual regions exhibiting prevalences of 6.5%, 6.4%, and 4.2% respectively. Variability in the ADHD prevalences for children in China can be attributed to differences in study methodology, socioeconomics, and dates of data collection.

India
A systematic review with meta-analysis determined the prevalence of childhood ADHD in India to be 7.1%, with individual studies ranging from 1.30% to 28.9%. Male children in India exhibited a slightly higher prevalence of 9.40% compared to 5.20% in female children. Overall, the prevalence of childhood ADHD in India does not differ significantly from the global prevalence, but there may be additional stigma associated with mental disorders in India.

South America
The estimated prevalence of symptomatic adult ADHD in North and South America is 6.06%. The estimated prevalence of childhood ADHD in South America is 11.8%, which is not significantly different from North America, Europe, Oceania, or Asia. The childhood ADHD prevalences for Colombia, Peru, and Brazil are 1.2%, 0.8%, and 2.5% respectively. The adult ADHD prevalences for Colombia, Peru, and Brazil are 2.5%, 1.4%, and 5.9% respectively.