Table 3. Changes in outcome variables, unilateral fixation group.
| Variable | PreOp | PostOp | ∆** | P* | |||
|---|---|---|---|---|---|---|---|
| 1 mo. | 3 mos. | 6 mos. | 12 mos. | ||||
| ODI† | 47.33 (±22.34) | 28.5 (±9.42) | 21.83(±8.63) | 15.67(±8.35) | 11.5 (±8.14) | −35.83 | <0.001 |
| VAS leg pain§ | 8 (2.0) | 2.5 (3.0) | 2 (3.0) | 1 (2.0) | 1 (2.0) | −7 | <0.001 |
| VAS back pain§ | 8 (2.0) | 3.5 (4.0) | 3 (4.0) | 2 (3.0) | 1.5 (4.0) | −6.5 | <0.001 |
| SF-36§ | 44.44 (21.26) | 52.39 (2.50) | 49.89 (13.37) | 53.62 (23.73) | 62.25 (17.28) | +17.81 | 0.004 |
†, values expressed as mean (± SD); §, median (IQR); **, change from PreOp to 12 mos.; *, Friedman test; mo, month; mos., months.