| in the early 1950s | 10 | temporal |
| very | 9 | degree |
| for stroke prophylaxis | 6 | purpose |
| warfarin → be → effective | 37 |
| warfarin → be → effective medication | 4 |
| warfarin → be → powerful medication | 4 |
| negative | neutral | positive |
| 0.306 | 0.411 | 0.283 |
| Raw frequency | 45 |
| Normalized frequency | 0.813 |
| Modifier score | 0.500 |
| Perplexity | 82.419 |