Mean and ranges for anesthesia, surgical, and hospital stay times for both single- and two-level ACDF
| Level | Mean anesthesia time (hours) | Minimum anesthesia time (hours) | Maximum anesthesia time (hours) | Mean surgical time (hours) | Minimum surgical time (hours) | Maximum surgical time (hours) | Mean stay time (hours) | Minimum stay time (hours) | Maximum stay time (hours) | Total number |
|---|---|---|---|---|---|---|---|---|---|---|
| Single level | 2 | 1.3 | 3.0 | 1.3 | 0.8 | 2.5 | 4.7 | 2.7 | 8.2 | 74 |
| Two level | 2.3 | 1.7 | 3.5 | 1.6 | 1.2 | 2.5 | 5.4 | 3.4 | 9.6 | 45 |