Table 4.

Association between BMI and relative abundance of a microbial genus (Blautia and Bifidobacterium) adjusted by Models 1–3

	Blautia and BMI		Bifidobacterium and BMI
	Men	Women	Men	Women
	P valuea	P valuea	P valuea	P valuea
Model 1
Age	0.020(D)*	0.004(D)**	0.031(D)*	0.486(D)
Model 2
Smoking habit
Total dietary fibre intake	0.141(D)	0.002(D)**	0.003(D)**	0.689(D)
Alcohol intake
Habitual medicine use
Model 3(1 × 2 + VFA + WC)
Age
VFA
Waist circumference
Smoking habit	0.140(D)	0.002(D)**	0.003(D)**	0.685(D)
Total dietary fibre intake
Alcohol intake
Habitual medicine use

(D) indicates tendency to decrease, (I) indicates tendency to increase relative to VFA

P < 0.05 and < 0.01 are indicated by * and **, respectively

^aAnalysis of variance for linear regression model was used