| on the operating table | 8 | location |
| through a frontal incision | 3 | manner |
| comfortably | 2 | degree |
| patient → lie → prone | 14 |
| patient → lie in → prone position | 12 |
| negative | neutral | positive |
| 0.283 | 0.662 | 0.055 |
| Raw frequency | 26 |
| Normalized frequency | 0.400 |
| Modifier score | 0.500 |
| Perplexity | 482.166 |