Table 1.
Baseline characteristics
| Characteristic | Group A | Group B | P value |
|---|---|---|---|
| (n = 20) | (n = 20) | ||
| Age at surgery, mean (SD), years | 70.0 (15.0) | 66.3 (9.5) | 0.06 |
| Sex, n (%) | 0.6 | ||
| Male | 16 (80) | 16 (80) | |
| Female | 4 (20) | 4 (20) | |
| Metastatic tumor diagnosis, n (%) | |||
| Liver | 5 (25) | 5 (25) | |
| Lung | 3 (15) | 4 (20) | |
| Prostate | 1 (5) | 2 (10) | |
| Thyroid | 2 (10) | 1 (5) | |
| Kidney | 2 (10) | 1 (5) | |
| Breast | 1 (5) | 1 (5) | |
| Gastric | 0 | 2 (10) | |
| Others | 6 (30) | 4 (20) | |
| Main level of tumors, n (%) | 0.02 | ||
| Thoracic | 8 (40) | 15 (75) | |
| Lumbar | 12 (60) | 5 (25) | |
| Preoperative modified Frankel category, n (%) | 0.02 | ||
| A | 0 | 1 (5) | |
| B | 0 | 2 (10) | |
| C | 2 (10) | 7 (35) | |
| D1 | 10 (50) | 5 (25) | |
| D2 | 0 | 3 (15) | |
| D3 | 3 (15) | 2 (10) | |
| E | 5 (25) | 0 | |
| Revised Tokuhashi score, mean (SD) | 7.2 (2.9) | 5.8 (2.2) | 0.1 |
| SINS, mean (SD) | 10.5 (1.9) | 9.0 (2.0) | 0.04 |
| ESCCS, n (%) | 0.1 | ||
| 0 | 2 (10) | 0 | |
| 1a | 2 (10) | 0 | |
| 1b | 0 | 1 (5) | |
| 1c | 1 (5) | 1 (5) | |
| 2 | 10 (50) | 6 (30) | |
| 3 | 5 (25) | 12 (60) | 0.6 |
| Preoperative VAS, mean (SD) | 5.7 (2.2) | 6.0 (2.4) | 0.6 |
| Preoperative Barthel index, mean (SD) | 65.5 (32.7) | 41.0 (34.2) | 0.06 |
Abbreviation: SINS Spinal Instability Neoplastic Score; ESCCS, epidural spinal cord compression scale; VAS, visual analogue scale