Table 2.

Alpha diversity analysis of biliary microbiota in the recurrence group and the control group.

Alpha diversity index	Recurrence group	Control group	P value
Shannon	2.285	5.612	0.001
Simpson	0.537	0.929	0.001
Chao1	485.778	466.849	0.600
Observed_species	366.444	359.789	0.482
Goods_coverage	0.998	0.991	0.013