| Categories | All n (%) | Phase 1 n (%) | Phase 2 n (%) | p
|
| Category I | 68 (53.1) | 42 (61.8) | 26 (38.2) | 0.15 |
| Category II | 28 (21.9) | 13 (46.4) | 15 (53.6) |
|
| Category IV | 32 (25) | 13 (40.6) | 19 (59.4) |
|
| Total | 128 | 68 (53.1) | 60 (46.9) |
|