Table 2
Perioperative characteristics by depression severity.
| Characteristic | Minimal(n = 42) | Mild(n = 32) | Moderate/Severe(n = 27) | P value* |
| Spinal pathology | ||||
| Herniated nucleus pulposus | 85.7% (36) | 90.6% (29) | 85.2% (23) | 0.510 |
| Spinal stenosis | 57.1% (24) | 65.6% (21) | 66.7% (18) | 0.655 |
| Myeloradiculopathy | 92.8% (39) | 81.2% (26) | 88.9% (24) | 0.578 |
| Number of operative levels | 0.590 | |||
| Single | 64.3% (27) | 53.1% (17) | 55.6% (15) | |
| Multilevel | 35.7% (15) | 46.9% (15) | 44.4% (12) | |
| Operative time, min, mean ± SD | 47.2 ± 87.1 | 63.5 ± 19.3 | 54.4 ± 18.2 | 0.489 |
| Estimated blood loss, mL, mean ± SD | 31.7 ± 14.8 | 26.3 ± 9.4 | 30.8 ± 12.9 | 0.202 |
| Length of stay, h, mean ± SD | 13.0 ± 9.9 | 13.1 ± 14.2 | 12.5 ± 15.4 | 0.981 |
| Day of discharge | 0.138 | |||
| POD0 | 71.4% (30) | 81.3% (26) | 80.0% (20) | |
| POD1 | 26.1% (11) | 9.4% (3) | 16.0% (4) | |
| POD2 | 2.3% (1) | 9.4% (3) | 0.0% (0) | |
| POD3 | 0.0% (0) | 0.0% (0) | 4.0% (1) |
* P value calculated using
analysis or Student’s t test.POD, postoperative day.