| further | 9 | manner |
| before being introduced to the market | 5 | temporal |
| thoroughly | 4 | manner |
| drug → be → evaluated | 77 |
| drug → be → examined | 27 |
| drug → be → assessed | 21 |
| drug → be under → evaluation | 5 |
| negative | neutral | positive |
| 0.190 | 0.668 | 0.143 |
| Raw frequency | 130 |
| Normalized frequency | 0.502 |
| Modifier score | 0.893 |
| Perplexity | 148.571 |