| during pregnancy | 14 | temporal |
| mother → have → rubella | 18 |
| mother → contract → rubella | 5 |
| mother → be exposed to → rubella | 3 |
| mother → be infected with → rubella | 3 |
| negative | neutral | positive |
| 0.658 | 0.319 | 0.023 |
| Raw frequency | 29 |
| Normalized frequency | 0.445 |
| Modifier score | 0.500 |
| Perplexity | 325.588 |