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Table 3 Impact of constipation definition on prevalence estimate

From: Defining constipation to estimate its prevalence in the community: results from a national survey

Definition % Prevalence estimate (95% Confidence interval)
Chronic constipation (Rome III criteria) 24.0 (22.1, 25.9)
Sub-chronic constipation (modified Rome III criteria) 39.6 (37.5, 41.7)
Self-reported constipation in the past 2 weeks 24.9 (22.9, 26.8)
Self-reported constipation in the past 3 months 29.2 (27.2, 31.2)
Self-reported constipation in the past 12 months 58.9 (56.8, 61.0)
Fewer than 3 bowel motions per week in the past 3 months 19.6 (17.9, 21.3)
Fewer than 3 bowel motions per week in the past 12 months 9.4 (8.1, 10.7)