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. Author manuscript; available in PMC: 2017 Feb 1.
Published in final edited form as: Gastroenterology. 2015 Oct 13;150(2):367–379.e1. doi: 10.1053/j.gastro.2015.10.005

Table 2.

Associations Between Microbiota and Other Variables of Interest

Variable Stool Mucosal
Unweighted UniFrac a Weighted UniFrac a Unweighted UniFrac a Weighted UniFrac a
Univariate analyses
 Age, y .03 .02 .09 .13
 BMI .62 .15 .73 .72
 Calories .04 .14 .92 .12
 Carbohydrate .26 .09 .93 .86
 Fat .31 .07 .73 .59
 Constipation status .049 .09 <.001 .005
 Colonic transit .22 .008 .07 .07
 Breath methane <.001 .02 .01 .97
Multiple variable analyses
 Constipation status (adjusted for age, BMI, diet, and colonic transit) .50 .39 <.001 .048
 Colonic transit (adjusted for age, BMI, diet, and constipation status) .92 .08 .55 .55
 Breath methane (age, BMI, constipation status, colonic transit, diet) <.001 .03 .005 .99
a

P values

Abbreviations: BMI, body mass index (calculated as weight in kilograms divided by height in meters squared); UniFrac, ‘GUniFrac’ function in R package