| partially | 4 | degree |
| depending on the gestational age | 4 | other |
| primarily | 2 | degree |
| lung → be → immature | 11 |
| lung → be → mature | 5 |
| negative | neutral | positive |
| 0.548 | 0.307 | 0.145 |
| Raw frequency | 16 |
| Normalized frequency | 0.396 |
| Modifier score | 0.500 |
| Perplexity | 271.273 |