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Age group prevalence of constipation in 1306 patients answering questionnaires on constipation during a GP visit.
Self-C: self-reported constipation (positive answer at the direct question: ‘Do you consider yourself suffering of constipation?’); VAS-C: constipation measured by a visual analogue scale (score >2 out of 10 cm); Rome-C: constipation defined according to the Rome III Criteria.
*p = 0.04 vs. 56–65 years by multivariate analysis.
