Scoring System | UBC (n = 67) | Control (n = 61) | p-value |
---|---|---|---|
VAS back | |||
 Preop (mean score) | 6.95 ± 1.51 | 7.00 ± 1.53 | 0.868 |
 Postop (6 h) | 2.94 ± 0.74 | 3.36 ± 0.77 | 0.002** |
 Postop (1 wk) | 2.82 ± 0.76 | 3.16 ± 0.90 | 0.021* |
 Follow-up at 6 mos | 2.36 ± 0.83 | 2.34 ± 0.73 | 0.920 |
 Follow-up at 1 yrs | 1.94 ± 0.69 | 2.11 ± 0.61 | 0.134 |
 Follow-up at 2 yrs | 1.82 ± 0.60 | 1.93 ± 0.54 | 0.266 |
 p-value (pre vs. post) | 0.000** | 0.000** |  |
VAS leg | |||
 Preop (mean score) | 7.13 ± 1.47 | 7.25 ± 1.41 | 0.662 |
 Postop (6 h) | 3.34 ± 0.75 | 3.67 ± 0.81 | 0.019* |
 Postop (1 wk) | 3.18 ± 0.72 | 3.39 ± 0.86 | 0.127 |
 Follow-up at 6 mos | 2.21 ± 0.83 | 2.18 ± 0.72 | 0.835 |
 Follow-up at 1 yrs | 1.69 ± 0.63 | 1.77 ± 0.53 | 0.420 |
 Follow-up at 2 yrs | 1.64 ± 0.60 | 1.72 ± 0.52 | 0.413 |
 p value (pre vs post) | 0.000** | 0.000** |  |
ODI | |||
 Preop (mean score) | 62.13 ± 3.51 | 61.13 ± 2.82 | 0.079 |
 Follow-up at 3 mos | 31.62 ± 5.44 | 33.15 ± 4.80 | 0.097 |
 Follow-up at 6 mos | 16.58 ± 2.40 | 16.77 ± 2.41 | 0.659 |
 Follow-up at 1 yrs | 12.81 ± 1.36 | 12.97 ± 1.48 | 0.523 |
 Follow-up at 2 yrs | 12.10 ± 0.92 | 12.23 ± 0.88 | 0.236 |
 p-value (pre vs. post) | 0.000** | 0.000** |  |
ZCQ | |||
 Preop (mean score) | 66.85 ± 2.57 | 66.03 ± 2.31 | 0.062 |
 Postop (1 wk) | 38.67 ± 3.67 | 39.85 ± 3.90 | 0.080 |
 Follow-up at 6 mos | 22.18 ± 3.10 | 21.59 ± 2.72 | 0.258 |
 Follow-up at 1 yrs | 19.72 ± 2.39 | 20.20 ± 1.97 | 0.219 |
 Follow-up at 2 yrs | 18.71 ± 1.74 | 19.10 ± 1.77 | 0.220 |
 p-value (pre vs. post) | 0.000** | 0.000** |  |