| highly | 7 | degree |
| in specific populations | 6 | location |
| very | 6 | degree |
| morphine → be → effective | 27 |
| morphine → be → active | 4 |
| morphine → see → use | 3 |
| negative | neutral | positive |
| 0.111 | 0.395 | 0.494 |
| Raw frequency | 34 |
| Normalized frequency | 0.731 |
| Modifier score | 1.000 |
| Perplexity | 134.242 |