| currently | 11 | temporal |
| further | 7 | degree |
| heavily | 6 | degree |
| drug → be → studied | 237 |
| drug → be studied for → use | 12 |
| drug → being → studied | 7 |
| drug → be studied in → addition | 3 |
| drug → be studied in → detail | 3 |
| drug → be studied to → date | 3 |
| negative | neutral | positive |
| 0.179 | 0.660 | 0.161 |
| Raw frequency | 265 |
| Normalized frequency | 0.597 |
| Modifier score | 0.594 |
| Perplexity | 55.829 |