| sometimes | 5 | temporal |
| in some cases | 5 | temporal |
| in a few new mothers | 5 | location |
| symptom → be → prolonged | 63 |
| symptom → be → long | 21 |
| symptom → become → prolonged | 14 |
| symptom → be prolonged in → case | 11 |
| negative | neutral | positive |
| 0.589 | 0.385 | 0.026 |
| Raw frequency | 109 |
| Normalized frequency | 0.484 |
| Modifier score | 0.617 |
| Perplexity | 128.698 |