Study of the Relationship between Microbiome and Colorectal Cancer Susceptibility Using 16SrRNA Sequencing

Table 5

Richness and diversity analysis and proportions of main bacteria at the phylum level.

Index	Healthy group (n = 42)	Polyp group (n = 59)	Adenoma group (n = 54)	CRC group (n = 51)
Chao richness index	271.9 ± 58.6	238.4 ± 70.1	240.0 ± 63.2	265 ± 80.7
Shannon index	3.01 ± 0.56	2.72 ± 0.72	2.77 ± 0.59	2.79 ± 0.77
Simpson index	0.14 ± 0.10	0.18 ± 0.13	0.15 ± 0.10	0.17 ± 0.15
Bacteria
Bacteroidetes (%)	52.14	53.92	52.46	47.06
Firmicutes (%)	35.88	29.73	24.27	25.36
Proteobacteria (%)	9.33	12.31	16.51	22.37
Fusobacteria (%)	0.60	1.97	3.98	3.45
Actinobacteria (%)	1.25	1.76	1.89	0.72