| with other substances | 5 | other |
| with alcohol | 3 | other |
| methadone → be → mixed | 6 |
| methadone → be combined with → other medications | 3 |
| methadone → be used in → combination | 3 |
| negative | neutral | positive |
| 0.536 | 0.396 | 0.068 |
| Raw frequency | 12 |
| Normalized frequency | 0.373 |
| Modifier score | 0.500 |
| Perplexity | 105.415 |