Table 2.

Differences in the relative abundance of gut bacteria at the genus level between osteoporosis patients and healthy control

Genus	Higher in osteoporosis		Higher in healthy control
	Reference	Ratio (%)#	Reference	Ratio (%)#
Blautia			Wei et al., 2021	7.63
			Lyu et al., 2021b	9.36
			Li, 2019	14.46
			Xu et al., 2020*	4.21
			He et al., 2020**
Alistipes	Das et al., 2019	1.23	Wang ZX et al., 2021	2.71
			Wei et al., 2021	2.05
			He et al., 2020	0.95
			Li, 2019	1.65
Megamonas			Xu et al., 2020	5.14
			Li, 2019	3.10
Anaerostipes	Das et al., 2019	2.21	Li, 2019	2.69
			Wei et al., 2021	1.63
Lactobacillus	Das et al., 2019	8.60
	Li, 2019	1.65
	Lyu et al., 2021a	8.75
	Lyu et al., 2021b	5.94
Ruminococcus	Wei et al., 2021	2.86
	Das et al., 2019	3.68
Bacteroides	He et al., 2020*	46.74	Das et al., 2019	16.42
	Wei et al., 2021	29.63
	Xu et al., 2020	6.36
	Lyu et al., 2021b	7.76
	Wang ZX et al., 2021	48.12
	Li et al., 2019&
	Rettedal et al., 2021

^# Approximation proportion of relative abundance histogram. ^* The difference was statistically significant. ^** The difference was significant in postmenopausal osteopenia. ^& Patients characterized by low bone mineral density (BMD).