Operative and perioperative variables of patients receiving 2- and 3-level posterolateral lumbar fusion.
| Variables | 2-Level Fusion (N = 557) | 3-Level Fusion (N = 287) |
| Estimated blood loss (mL), mean ± SD | 583.09 ± 447.54 | 790.32 ± 682.26 |
| Operative time (min), mean ± SD | 240.82 ± 68.47 | 272.82 ± 75.74 |
| Interbody placement, n (%) | 178 (32.0%) | 70 (24.4%) |
| Length of stay (d), mean ± SD | 3.44 ± 1.82 | 4.46 ± 2.67 |
| Discharged, n (%) | ||
| Home | 443 (85.0%) | 202 (74.5%) |
| In-patient rehabilitation facility | 48 (9.2%) | 46 (17.0%) |
| Skilled nursing facility | 30 (5.8%) | 23 (8.5%) |