| to the uterine wall | 6 | location |
| during the pregnancy | 6 | temporal |
| abnormally | 2 | degree |
| placenta → be → attached | 29 |
| placenta → remain → attached | 8 |
| negative | neutral | positive |
| 0.310 | 0.620 | 0.070 |
| Raw frequency | 37 |
| Normalized frequency | 0.609 |
| Modifier score | 0.800 |
| Perplexity | 66.293 |