Table 1.
Baseline Characteristics Comparing Between Mini-Invasive (M) and Conventional (C) Groups
| Characteristics | M (n=14) | C (n=22) | P |
|---|---|---|---|
| Gender | |||
| Female | 5 | 9 | 0.755 |
| Male | 9 | 13 | |
| Age | 67±3 | 65±2 | 0.603 |
| BMI | 23±1 | 24±1 | 0.410 |
| ASA score | |||
| I | 0 | 1 | 0.089 |
| II | 10 | 8 | |
| III | 4 | 13 | |
| Tumor pathology | |||
| Renal | 3 | 4 | 0.551 |
| Lung | 4 | 4 | |
| Prostate | 2 | 3 | |
| Hematological malignancy | 3 | 3 | |
| Uroepithelium | 1 | 1 | |
| Digestive tract malignancy | 1 | 1 | |
| Hepatobiliary malignancy | 0 | 2 | |
| Breast | 0 | 3 | |
| Gynecological malignancy | 0 | 1 | |
| Blood supply | |||
| Hypervascular (renal, Hepatobiliary) | 3 | 6 | 0.908 |
| Non-hyper vascular (lung, etc.) | 11 | 16 | |
| Compression grade (Bilsky) | |||
| 1 | 2 | 2 | 0.711 |
| 2 | 8 | 12 | |
| Location of the lesion | |||
| Lumbar spine | 8 | 15 | 0.501 |
| Thoracic spine | 6 | 7 | |
| Tokuhashi score | 7.6±0.6 | 9.0±0.4 | 0.056 |
| SINS score | 10.4±0.3 | 8.6±0.4 | 0.002 |
| Ambulatory status | |||
| Nonambulatory | 3 | 7 | 0.706 |
| Ambulatory | 11 | 15 | |
| AIS | |||
| D | 2 | 2 | 0.711 |
| E | 8 | 12 | |
| VAS | 7.8±0.1 | 7.8±0.1 | 0.698 |
| Karnofsky score | 59±2 | 56±1 | 0.181 |
| ECOG score | 2.3±0.2 | 2.1±0.1 | 0.357 |
| HGB (g/L) | 120±6 | 129±4 | 0.193 |
| Hct (%) | 36.1±1.9 | 38.9±1.2 | 0.213 |
| Alb (g/L) | 38.0±1.3 | 41.5±0.9 | 0.026 |
Notes: NO Compression grade (Bilsky) and AIS were assigned for patients with decompression segment lower than L3. Bold font, P<0.05.
Abbreviations: SINS, spinal instability neoplastic score; ASA, American Society of Anesthesiologists; BMI, body mass index; AIS, American Spinal Injury Association Impairment Scale; ECOG, Eastern Cooperative Oncology Group; HGB, haemoglobin; Hct, haematocrit; Alb, albumin; VAS, visual analogue scale.