| in labour | 12 | location |
| in place | 9 | location |
| for pain relief | 7 | purpose |
| woman → have → epidural | 124 |
| woman → receive → epidural | 45 |
| woman → use → epidural | 16 |
| negative | neutral | positive |
| 0.349 | 0.549 | 0.102 |
| Raw frequency | 185 |
| Normalized frequency | 0.504 |
| Modifier score | 0.817 |
| Perplexity | 82.320 |