| to participation in the research | 18 | other |
| to pregnancy | 9 | other |
| to study drugs | 6 | purpose |
| death → be → unrelated | 64 |
| death → be considered → unrelated | 7 |
| negative | neutral | positive |
| 0.473 | 0.492 | 0.035 |
| Raw frequency | 71 |
| Normalized frequency | 0.520 |
| Modifier score | 0.833 |
| Perplexity | 489.362 |