| for decompression illness | 4 | cause |
| over decades | 2 | temporal |
| for both type i | 2 | other |
| diver → be → treated | 8 |
| diver → require → treatment | 5 |
| diver → receive → treatment | 3 |
| negative | neutral | positive |
| 0.292 | 0.568 | 0.140 |
| Raw frequency | 16 |
| Normalized frequency | 0.378 |
| Modifier score | 0.500 |
| Perplexity | 190.454 |