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Table 1 Rome III criteria for functional constipation

From: Is a multispecies probiotic mixture effective in constipation during pregnancy? 'A pilot study'

I. At least 2 or more of the following criteria:
 -Straining during at least 25% of the defecations
 -Lumpy or hard stools in at least 25% of the defecations
 -Sensation of incomplete evacuation for at least 25% of defecations
 -Sensation of anorectal obstruction/blockage for at least 25% of defecations
 -Manual manoeuvres to facilitate defecation for at least 25% of defecations
 -Fewer than three defecations per week
II. Loose stools are rarely present without the use of laxatives
III. Insufficient criteria for irritable bowel syndrome