| generally | 18 | degree |
| within a patient | 5 | other |
| in particular impedance-based techniques | 2 | other |
| invention → relate to → pacemaker | 20 |
| invention → pertain to → pacemaker | 3 |
| negative | neutral | positive |
| 0.076 | 0.836 | 0.088 |
| Raw frequency | 23 |
| Normalized frequency | 0.268 |
| Modifier score | 0.500 |
| Perplexity | 40.395 |