| sometimes | 10 | temporal |
| during childbirth | 7 | temporal |
| from the use of such drugs | 6 | other |
| problem → can → arise | 171 |
| problem → can → emerge | 5 |
| negative | neutral | positive |
| 0.604 | 0.325 | 0.071 |
| Raw frequency | 176 |
| Normalized frequency | 0.652 |
| Modifier score | 0.538 |
| Perplexity | 32.548 |