TABLE 5.
Patient Reported Outcomes
| n=105 | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| ODI | VAS—Low Back Pain | VAS—Worst Leg Pain | ZCQ—Symptom Score | ZCQ—Physical Score | ZCQ—Satisfaction | |||||||
| Time Interval | Mean | MCID (%) | Mean | MCID (%) | Mean | MCID (%) | Mean | MCID (%) | Mean | MCID (%) | Mean | % <2.5 (%) |
| Preoperative | 56.9±12.4 | — | 67.2±24.4 | — | 83.9±13.2 | — | 3.76±0.64 | — | 2.95±0.40 | — | — | — |
| Week 6 | 22.1±17.0 | 83.7 | 15.9±16.7 | 79.6 | 12.0±20.4 | 91.3 | 1.96±0.63 | 94.2 | 1.64±0.59 | 85.6 | 1.42±0.49 | 96.2 |
| Month 3 | 14.3±16.2 | 92.2 | 13.4±19.8 | 79.6 | 12.4±21.3 | 94.1 | 1.86±0.74 | 95.1 | 1.45±0.62 | 90.3 | 1.43±0.61 | 91.3 |
| Month 6 | 14.0±17.5 | 89.3 | 15.1±23.4 | 80.6 | 13.3±23.4 | 90.3 | 1.78±0.71 | 94.2 | 1.43±0.64 | 89.3 | 1.40±0.65 | 91.3 |
| Month 12 | 11.5±14.9 | 93.2 | 12.7±21.8 | 83.5 | 11.5±22.7 | 94.2 | 1.74±0.74 | 93.2 | 1.39±0.56 | 93.2 | 1.34±0.64 | 91.3 |
| P | <0.001 | — | <0.001 | — | <0.001 | — | <0.001 | — | <0.001 | — | — | — |
Continuous variables are displayed as mean (SD).
MCID indicates minimum clinically important difference; ODI, Oswestry Disability Index; VAS, Visual Analog Score; ZCQ, Zurich Claudication Questionnaire.