Table 3

Patient-reported outcomes.

Measure N Mean (SD) Change Compared With Preoperative P Value
ODI
 2 wk postoperative326.4 (23.2)0.129
 6 wk postoperative38−7.7 (20) 0.023
 3 mo postoperative29−18.3 (17.4) <0.001
Pain EQ5D
 2 wk postoperative33−0.4 (1) 0.017
 6 wk postoperative40−1.0 (1.1) <0.001
 3 mo postoperative5−0.8 (0.4) 0.016
VAS EQ5D
 2 wk postoperative33−2.8 (26.2)0.541
 6 wk postoperative406.6 (15.8) 0.012
 3 mo postoperative516.4 (20.2)0.145
Leg VAS
 2 wk postoperative39−2.3 (4.1) <0.001
 6 wk postoperative42−3.3 (3.6) <0.001
 3 mo postoperative32−3.8 (3.4) <0.001
Back VAS
 2 wk postoperative38−1.6 (2.5) <0.001
 6 wk postoperative43−3.3 (3.1) <0.001
 3 mo postoperative31−3.9 (3.2) <0.001

  • Abbreviations: ODI, Oswestry Disability Index; VAS, visual analog scale.

  • Note: Boldface indicates statistically significant findings.