Table 1.

Characteristics and OTUs of two groups

Group	IBS-D	HCs	P value
Number	30	30	–
Gender
Male	13	15	0.293
Female	17	15
Age	40.3 ± 14.7	40.9 ± 14.4	0.874
BMI	19.97 ± 5.58	21.39 ± 3.83	0.014
Staple food
Rice	26	27	1.000
Wheat	4	3
OTUs	1547	1388	0.001