| during pregnancy | 46 | temporal |
| in the country | 18 | location |
| often | 11 | temporal |
| woman → use → drug | 448 |
| woman → use → the drug | 87 |
| woman → use → substance | 52 |
| negative | neutral | positive |
| 0.511 | 0.429 | 0.060 |
| Raw frequency | 587 |
| Normalized frequency | 0.646 |
| Modifier score | 0.684 |
| Perplexity | 135.724 |