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Patients lost to follow-up with National Advisory Committee on Aeronautics (NACA) scores
| Incomplete data | Transferred to other hospital | Not retrieved in medical records | Total | |
|---|---|---|---|---|
| NACA 1 | 5 | 0 | 0 | 5 |
| NACA 2 | 22 | 1 | 3 | 26 |
| NACA 3 | 46 | 13 | 4 | 63 |
| NACA 4 | 31 | 16 | 4 | 51 |
| NACA 5 | 9 | 3 | 5 | 17 |
| NACA 6 | 5 | 2 | 1 | 8 |
