| Typicality: | 0.559 |
| Saliency: | 0.724 |
| in oxygen | 15 | other |
| during the operation | 7 | temporal |
| after tracheal intubation | 5 | temporal |
| anesthesia → be maintained with → nitrous oxide | 28 |
| anesthesia → be maintained with → 60% nitrous oxide | 12 |
| anesthesia → be maintained with → 50% nitrous oxide | 9 |
| negative | neutral | positive |
| 0.068 | 0.851 | 0.081 |
| Raw frequency | 49 |
| Normalized frequency | 0.724 |
| Modifier score | 0.500 |
| Perplexity | 51.859 |