| Factor evaluated | n | % | p-value¹ |
| Infection |
|
|
|
| Yes | 13 | 16.0 | <0.001 |
| No | 68 | 84.0 | |
| PATB |
|
|
|
| Yes | 72 | 88.9 | <0.001 |
| No | 9 | 11.1 | |
| ASAPS |
|
|
|
| I | 14 | 17.3 | <0.001 |
| II | 64 | 79.0 | |
| III | 3 | 3.7 |