| Hb levels (g/dl) | N | Mean SpO2 | Min | Max |
| 7.0 - 9.9 | 29 | 97.24 | 94.0 | 99.0 |
| 10.0 - 12.9 | 33 | 97.21 | 93.0 | 100.0 |
| 13.0 - 16.0 | 32 | 97.16 | 94.0 | 100.0 |
| Total | 94 | 97.20 | 93.0 | 100.0 |