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MONTREAL -- Anal incontinence is four times more prevalent than previously thought, and it affects older men and women almost equally, according to what British researchers describe as the first systematic review of the prevalence of this disorder.
"Age, not gender, is the most important factor, and obstetric trauma does not have a major effect," Philip Toozs-Hobson, M.D., reported at the annual meeting of the International Continence Society.
The review of 29 studies with a total of 69,152 participants found an overall rate of anal incontinence of 3.5% in men and 4.5% in women across all age groups. "It suggests that the 1% rate presumed by government agencies is an underestimate," said Dr. Toozs-Hobson, a consultant gynecologist at Birmingham (England) Women's Hospital.
Moreover, the effects of obstetric trauma could not be seen in this data, he said.
"It has long been thought that the incidence of anal incontinence is higher in women because ...