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. Author manuscript; available in PMC: 2013 Sep 30.
Published in final edited form as: Am J Gastroenterol. 2013 Apr 9;108(5):796–803. doi: 10.1038/ajg.2013.73

Table 1.

Comparison of Constipation Prevalence According to Stool Consistency and Stool Frequency Definitions in NHANES 2005-2006 and 2007-2008

Stool Frequency (per week) Stool Consistency
Bristol Types 1-2 Bristol Types 3-7 Total
<3 0.8% (79) 2.4% (241) 3.1% (320)
>3 6.5% (659) 90.3% (8377) 96.8% (9036)
Total 7.2% (738) 92.3% (8618) 100% (8674)

All values are presented as percentage (n).