| during pregnancy | 23 | temporal |
| within a year before delivery | 8 | temporal |
| in grams | 4 | other |
| mother → take → drug | 37 |
| mother → take → the drug | 29 |
| mother → taken → the drug | 4 |
| mother → used → this drug | 3 |
| negative | neutral | positive |
| 0.632 | 0.339 | 0.030 |
| Raw frequency | 73 |
| Normalized frequency | 0.626 |
| Modifier score | 0.567 |
| Perplexity | 177.636 |