TABLE 2.

Shannon index and Chao1 richness values of endometrial and vaginal microbiota derived from the identical subject

	Endometrial microbiota	Vaginal microbiota	P‐value
All women (n = 106), mean ± SD
Shannon index	2.4 ± 1.2	0.8 ± 0.7	1.94 × 10−22
Chao1 richness	59.1 ± 23.3	16.9 ± 10.9	2.88 × 10−36
Control (n = 17), mean ± SD
Shannon index	2.4 ± 1.0	0.8 ± 0.4	9.49 × 10−06
Chao1 richness	60.6 ± 18.5	16.1 ± 5.6	1.34 × 10−08
RIF (n = 89), mean ± SD
Shannon index	2.4 ± 1.2	0.8 ± 0.7	4.29 × 10−18
Chao1 richness	58.8 ± 24.2	17.1 ± 11.7	5.61 × 10−29

Shannon diversity and Chao1 richness values were calculated based on a subsample of 1000 sequences.

Abbreviations: RIF, repeated implantation failure; SD, standard deviation.