Table 2.

The final genera selected based on the mean intra-twin differences from 133 genera.

Family	Genus	The Mean Intra-Twin Differences (Mean ITDx)	p Value
ALL		0.668	―
Lactobacillaceae	Lactobacillus	0.380	0.015	*
Bacteroidaceae	Bacteroides	1.338	0.000	*
Bifidobacteriaceae	Gardnerella	1.073	0.035	*
Lachnospiraceae	Lachnospiraceae UCG-008 group	1.163	0.006	*
Lachnospiraceae	Lachnospiraceae UCG-004 group	1.075	0.018	*
Lachnospiraceae	Lachnospiraceae ND3007 group	1.063	0.022	*
Lachnospiraceae	Lachnospiraceae FCS020 group	1.060	0.026	*
Lachnospiraceae	Roseburia	1.146	0.020	*
Lachnospiraceae	Eubacterium hallii group	0.987	0.032	*
Lachnospiraceae	Lachnospira	1.037	0.041	*
Porphyromonadaceae	Parabacteroides	1.064	0.028	*
Ruminococcaceae	Faecalibacterium	1.043	0.028	*
Ruminococcaceae	Ruminococcaceae UCG-003 group	1.030	0.038	*

Welch’s Two-Sample t-test (* p < 0.05).