Table 1. Surgical resection decreases the diversity of colonic bacteria. Estimation of diversity within the non-operation control (NOC), sham and small bowel resection (SBR) groups at two- and six- weeks post surgery as assessed by Chao 1 richness estimation, Shannon’s index for diversity, number of observed species and Simpson’s diversity index.
| Data set | NOC Week 2 |
Sham Week 2 |
SBR Week 2 |
NOC Week 6 |
Sham Week 6 |
SBR Week 6 |
|---|---|---|---|---|---|---|
| Chao 1 richness estimation |
905 ± 41 |
892 ± 123 |
718 ± 59 |
1224 ± 82 |
1276 ± 97 |
716 ± 34 |
| Shannon’s index for diversity |
6.9 ± 0.2 |
6.5 ± 0.6 |
5.7 ± 0.3 |
7.1 ± 0.1 |
7.4 ± 0.2 |
5.5 ± 0.2 |
| Number of observed species |
552 ± 16 |
571 ± 80 |
475 ± 44 |
726 ± 46 |
777 ± 63 |
428 ± 15 |
| Simpson’s diversity index | 0.96 ± 0.01 | 0.95 ± 0.02 | 0.93 ± 0.01 | 0.98 ± 0.01 | 0.98 ± 0.00 | 0.93 ± 0.01 |