| I-IIa |
| IIb/N− | IIb/N+ |
| |||
| AD | Un-AD | P | AD | Un-AD | AD | Un-AD | P |
Number | 46 | 85 | 0.81 | 84 | 83 | 27 | 19 | 0.61 |
PFS (m, mouth) | 22.1 | 20.1 | 15.2 | 12 | 13.9 | 20.1 |