Perioperative characteristics.
| Characteristic | LOS ≥45 h (n = 52) | LOS <45 h (n = 52) | P Valuea |
| Spinal pathology | |||
| Degenerative spondylolisthesis | 23.1% (12) | 9.6% (5) | 0.063 |
| Isthmic spondylolisthesis | 36.5% (19) | 50.0% (26) | 0.166 |
| Recurrent herniated nucleus pulposus | 5.8% (3) | 7.7% (4) | 0.696 |
| Scoliosis | 1.9% (1) | 11.5% (6) | 0.050 |
| Central stenosis | 73.1% (38) | 80.8% (42) | 0.352 |
| Foraminal stenosis | 40.4% (21) | 69.2% (36) | 0.003 |
| Operative time, min | 126.3 ± 37.4 | 128.1 ± 40.1 | 0.816 |
| Estimated blood loss, mL | 73.5 ± 50.2 | 52.1 ± 31.1 | 0.014 |
| LOS (h) | 65.1 ± 29.9 | 26.8 ± 7.6 | <0.001 |
| Day of discharge | <0.001 | ||
| POD 0 | 0.0% (0) | 9.6% (5) | |
| POD 1 | 2.1% (1) | 82.7% (43) | |
| POD 2 | 66.0% (31) | 7.7% (4) | |
| POD 3 | 14.9% (7) | 0.0% (0) | |
| POD 4 | 14.9% (7) | 0.0% (0) | |
| POD 9 | 2.1% (1) | 0.0% (0) |
Note: Data presented as % (n) or mean ± SD. Boldface indicates statistical significance.
↵a P value calculated using χ 2 analysis or Student’s t test for independent samples for categorical and continuous variables, respectively.
LOS, length of stay; POD, postoperative day of discharge.