Table 2.
Evaluation index
| Simultaneous operation | First cervical surgery | First lumbar surgery | ||||||
|---|---|---|---|---|---|---|---|---|
| Mean | SD | Mean | SD | Mean | SD | P value | ||
| Duration of surgery (min) | 245.00 | 5.00 | 342.50 | 18.18 | 346.11 | 24.77 | <0.0001 | |
| Blood loss (mL) | 480.00 | 27.39 | 528.21 | 43.97 | 519.44 | 43.99 | 0.08 | |
| Hospital stay (day) | 16.60 | 0.55 | 22.75 | 2.15 | 22.89 | 1.64 | <0.0001 | |
| VAS score | 8.00 | 1.00 | 8.36 | 0.68 | 8.17 | 0.71 | 0.49 | |
| JOA‐C | Before operation | 7.00 | 2.35 | 6.54 | 1.53 | 7.83 | 1.04 | 0.02 |
| 3 months after operation | 15.40 | 0.89 | 14.61 | 0.99 | 14.72 | 0.96 | 0.25 | |
| One year after operation | 15.60 | 0.55 | 15.32 | 0.67 | 15.44 | 0.98 | 0.72 | |
| Postoperative improvement rate of JOA‐C | 3 months after operation | 84.02% | 7.30% | 77.66% | 7.23% | 75.63% | 8.80% | 0.11 |
| One year after operation | 85.68% | 5.44% | 84.27% | 5.02% | 83.34% | 10.25% | 0.80 | |
| JOA‐L | Before operation | 7.20 | 2.17 | 4.64 | 2.36 | 5.78 | 1.22 | 0.02 |
| 3 months after operation | 23.00 | 3.16 | 23.11 | 1.66 | 23.11 | 1.57 | 0.99 | |
| One year after operation | 24.60 | 1.14 | 24.50 | 1.14 | 24.39 | 1.20 | 0.91 | |
| Postoperative improvement rate of JOA‐L | 3 months after operation | 73.35% | 11.22% | 76.04% | 5.39% | 74.78% | 5.95% | 0.61 |
| One year after operation | 80.04% | 3.35% | 81.65% | 3.74% | 80.21% | 4.76% | 0.45 | |