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 |