Table 9.

Bowel movement frequency and correlated bacterial families in lean and obese subjects

	Questionnaire score (Mean ± SD) or abundance (Mean% ± SD)			Prevalence (%)
	Lean group (BMI < 25) (n = 425)	Obese group (BMI > 30) (n = 13)	Significance	Lean group (BMI < 25) (n = 425)	Obese group (BMI > 30) (n = 13)	Significance
Bowel movement frequency	3.53 ± 0.77	3.54 ± 0.78	NS	-	-	-
Christensenellaceae	0.77 ± 2.14	0.01 ± 0.004	**	59.3	23.1	*
Mogibacteriaceae	0.23 ± 0.29	0.06 ± 0.05	**	84.7	69.2	NS
Rikenellaceae	1.77 ± 1.86	0.90 ± 0.96	*	91.5	84.6	NS

NS: P ≥ 0.05, *: P < 0.05, **: P < 0.01