| surgically | 6 | manner |
| the same | 6 | degree |
| at a site | 2 | location |
| catheter → be → implanted | 18 |
| catheter → be implanted in → the operating room | 3 |
| catheter → be implanted in → patient | 3 |
| negative | neutral | positive |
| 0.152 | 0.793 | 0.056 |
| Raw frequency | 24 |
| Normalized frequency | 0.346 |
| Modifier score | 0.750 |
| Perplexity | 132.865 |