Table 4. Important species selected by Random Forest.

Species list, mean decrease in Gini index and log ratios of median species abundances in G2 and G1. The log ratio was not determined (ND) for a few species due to zero median values in G2.

Species	MeanDecreaseGini	log2 (G2/G1)
Dorea sp. CAG:317	0.06	2.50
Bacteroides cellulosilyticus	0.11	1.86
Bacteroides finegoldii	0.31	1.77
Bacteroides dorei	0.18	1.59
Streptococcus parasanguinis	0.14	1.49
Clostridium symbiosum	0.15	1.35
Clostridium sp. 7_3_54FAA	0.16	1.34
Clostridium bolteae	0.36	1.03
Clostridium hathewayi	0.14	0.88
Bacteroides stercoris	0.12	0.87
Bacteroides caccae	0.10	0.68
Eubacterium biforme	0.06	−0.50
Subdoligranulum sp. 4_3_54A2FAA	0.05	−1.00
Bacteroides sp. 1_1_30	0.09	−1.05
Faecalibacterium sp. CAG:82	0.10	−1.16
Clostridium sp. L2–50	0.07	−1.16
Blautia sp. KLE 1732	0.12	−1.22
Clostridium sp. CAG:43	0.14	−1.38
Firmicutes bacterium CAG:56	0.14	−1.39
Ruminococcus sp. CAG:17	0.15	−1.46
Ruminococcus obeum	0.56	−1.47
Alistipes putredinis	0.09	−1.48
Roseburia inulinivorans	0.22	−1.53
Ruminococcus sp. CAG:90	0.10	−1.64
Bacteroides pectinophilus	0.35	−1.89
Roseburia intestinalis	0.19	−2.05
Coprococcus comes	0.18	−2.10
Oscillibacter sp. CAG:241	0.36	−2.26
Firmicutes bacterium CAG:83	0.27	−2.69
Dorea longicatena	0.24	−2.77
Firmicutes bacterium CAG:129	0.25	−3.00
Ruminococcus obeum CAG:39	2.37	−3.53
Blautia sp. CAG:37	0.11	−3.82
Eubacterium rectale	0.68	−4.40
Firmicutes bacterium CAG:176	0.05	ND
Firmicutes bacterium CAG:110	0.13	ND
Holdemania filiformis	0.21	ND