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Table 1 The Rome III constipation criteria

From: A descriptive study of colorectal function in adults with Prader-Willi Syndrome: high prevalence of constipation

Criteria (at least 25 % of defecations)

Frequency of symptom

Straining during defecation

7/19 (37%)

Lumpy or hard stools

6/19 (32%)

Sensation of incomplete evacuation

3/20 (15%)

Sensation of anorectal obstruction/blockage

8/19 (42%)

Manual manoeuvres to facilitate defecation

0/20 (0%)

Fewer than 3 defecations per week

8/17 (47%)

Loose stools are rarely present without laxatives

3/20 (15%)

Insufficient criteria for IBS (irritable bowel syndrome)

20/20 (100%)