Table 2.
Preoperative and postoperative VAS and ODI of CVP and BVP groups
| Variable | CVP group N = 29 |
BVP group N = 75 |
P-value |
|---|---|---|---|
| Preoperative VAS | 8.3 ± 1.0 | 8.2 ± 0.8 | 0.626 |
| Postoperative 1 day VAS | 3.2 ± 1.7# | 3.4 ± 1.2# | 0.691 |
| Postoperative 3 month VAS | 2.4 ± 1.2# | 2.8 ± 0.9# | 0.104 |
| Postoperative 6 month VAS | 2.0 ± 1.1# | 2.3 ± 1.0# | 0.222 |
| Postoperative 12 month VAS | 1.9 ± 1.0# | 1.8 ± 0.9# | 0.760 |
| Preoperative ODI | 75.0 ± 11.1 | 73.4 ± 11.7 | 0.529 |
| Postoperative 3 month ODI | 42.5 ± 15.1* | 45.5 ± 11.4* | 0.288 |
| Postoperative 6 month ODI | 36.2 ± 10.4* | 38.0 ± 9.6* | 0.386 |
| Postoperative 12 month ODI | 28.7 ± 11.5* | 29.3 ± 10.3* | 0.797 |
The table shows results of the outcome measures for both groups at preoperative, 3 months, 6 months and 12 months postoperative. Data are expressed as mean values (SD). Visual Analogue Scale (VAS, scale: 0 to 10), Oswestry Disability Index (ODI, scale: 0–100).# compare with preoperative VAS, P<0.05; * compare with preoperative ODI, P<0.05