Mean annual incidence of clinically diagnosed obsessive-compulsive disorder (principal diagnosis) in Taiwan's national health insurance research database, 2000 to 2008, age- and sex-adjusted

27.57 per 10(5) inhabitants

people newly diagnosed per 10,000 population per year, Taiwan (national health insurance research database)

“The estimated mean annual incidence was 27.57 per 10(5) inhabitants and the one year prevalence was 65.05 per 10(5) inhabitants.”

Huang et al., Prevalence, incidence, and comorbidity of clinically diagnosed obsessive-compulsive disorder in Taiwan: a national population-based study, Psychiatry Res 2014 (PubMed 25169892), 2014-08-15

Kind of source

Peer-reviewed study

Read on

2026-11-07

Daily check

Quote found at the source on 2026-11-07

What to know

Counts people treated with OCD as the principal diagnosis; the authors note it is lower than community surveys find, because many people with OCD never receive a diagnosis. On the PubMed page the power renders as a superscript (10 with a raised 5); Europe PMC carries the text as quoted. No worldwide OCD incidence exists: GBD does not model OCD.

Arithmetic

27.57 per 100,000 (written 10(5), meaning 10 to the power 5) / 10 = 2.757 per 10,000 per year.

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OCD