Variable | Total | Subsidence | Non-subsidence | p value | |
---|---|---|---|---|---|
Preoperative | VAS | 5.02 ± 1.20 | 5.07 ± 1.19 | 5.00 ± 1.22 | 0.804 |
JOA | 7.48 ± 1.05 | 7.38 ± 1.05 | 7.54 ± 1.06 | 0.520 | |
NDI | 28.93 ± 5.54 | 28.48 ± 6.09 | 29.16 ± 5.28 | 0.596 | |
Postoperative | VAS | 2.22 ± 0.88* | 2.17 ± 0.66 | 2.25 ± 0.98 | 0.666 |
JOA | 13.33 ± 1.37* | 13.14 ± 1.16 | 13.43 ± 1.48 | 0.359 | |
NDI | 15.96 ± 3.03* | 15.93 ± 3.27 | 15.98 ± 2.92 | 0.942 | |
3 months after the operation | VAS | 2.19 ± 0.63* | 2.27 ± 0.65 | 2.14 ± 0.62 | 0.357 |
JOA | 13.20 ± 1.02* | 12.97 ± 0.94 | 13.32 ± 1.05 | 0.128 | |
NDI | 15.26 ± 2.22* | 15.48 ± 2.40 | 15.14 ± 2.13 | 0.506 | |
The final follow-up | VAS | 2.08 ± 0.64* | 2.14 ± 0.58 | 2.05 ± 0.67 | 0.568 |
JOA | 13.16 ± 0.97* | 12.90 ± 0.98 | 13.30 ± 0.95 | 0.067 | |
NDI | 15.06 ± 1.84* | 15.31 ± 1.87 | 14.93 ± 1.82 | 0.368 |