| the longer | 3 | temporal |
| with mothers | 2 | other |
| mother → have → epidural | 13 |
| mother → be given → epidural | 5 |
| mother → get → epidural | 5 |
| mother → receive → epidural | 4 |
| negative | neutral | positive |
| 0.511 | 0.406 | 0.083 |
| Raw frequency | 27 |
| Normalized frequency | 0.431 |
| Modifier score | 0.900 |
| Perplexity | 127.470 |