| from urethral stents | 7 | other |
| from a group | 3 | other |
| from inflation expandable stent | 2 | other |
| stent → be → selected | 12 |
| stent → be → chosen | 4 |
| negative | neutral | positive |
| 0.067 | 0.877 | 0.056 |
| Raw frequency | 16 |
| Normalized frequency | 0.346 |
| Modifier score | 0.500 |
| Perplexity | 490.160 |