Effectiveness of probiotic therapy for the prevention of relapse in patients with inactive ulcerative colitis

Table 2 Comparison of characteristics of fecal samples (according to cluster)

Group(sample number)	OTU124/all T-RFs (%)	Butyrate/acetate ratio (mol)
Cluster I	2.8 ± 3.6	0.254 ± 0.172
Cluster II (n = 138)	27.6 ± 12.0	0.184 ± 0.147
Cluster III (n = 28)	18.0 ± 10.8	0.075 ± 0.126

Data are expressed as mean ± SD. Because equal variances were rejected for each variable, multiple comparisons were performed with Dunnett’s T3 test. Different letters indicate the presence of a significant difference (P < 0.05). T-RF: Terminal restriction fragment.