Sensitivity analysis of the power of the study to detect a true difference in the mean Shannon Diversity between two groups (those that have achieved IR compared with those that remain on PN)
| Sample size (per group) | Mean difference in Shannon Diversity | Power |
| 30 | 2.5 | >0.999 |
| 30 | 2.0 | >0.999 |
| 30 | 1.5 | 0.991 |
| 30 | 1.0 | 0.824 |
| 30 | 0.5 | 0.304 |
| 20 | 2.5 | >0.999 |
| 20 | 2.0 | 0.997 |
| 20 | 1.5 | 0.939 |
| 20 | 1.0 | 0.647 |
| 20 | 0.5 | 0.215 |
| 10 | 2.5 | 0.980 |
| 10 | 2.0 | 0.894 |
| 10 | 1.5 | 0.673 |
| 10 | 1.0 | 0.362 |
| 10 | 0.5 | 0.127 |
| 5 | 2.5 | 0.748 |
| 5 | 2.0 | 0.559 |
| 5 | 1.5 | 0.354 |
| 5 | 1.0 | 0.185 |
| 5 | 0.5 | 0.083 |
IR, intestinal rehabilitation; PN, parenteral nutrition.