| in 2009 | 3 | temporal |
| directly | 3 | manner |
| in the u.s. | 2 | location |
| death → be related to → drug use | 12 |
| death → be caused by → drug use | 9 |
| death → be related to → drug abuse | 5 |
| death → be associated with → drug use | 4 |
| death → be caused by → substance abuse | 3 |
| death → be affected by → drug use | 3 |
| negative | neutral | positive |
| 0.765 | 0.222 | 0.013 |
| Raw frequency | 36 |
| Normalized frequency | 0.409 |
| Modifier score | 0.867 |
| Perplexity | 30.524 |