The incidence of<unk><unk>  is approximately 1100 per 100,000 individuals in US which is about 7.8% lifetime risk. The incidence is 30-50% in patients with Crohn's disease. Women in adolescence and child bearing group and males of middle aged group are commonly affected. Females are more affected than males.
Anal fissure epidemiology and demographics
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Prostatitis epidemiology and demographics
Encopresis epidemiology and demographics
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