Table 1.
Demographic and preoperative characteristics of the patients receiving elective lumbar spinal fusion
| Experimental group (n = 21) |
Control group (n = 13) | P | |
|---|---|---|---|
| Femalea | 17 (81.0) | 7 (53.8) | 0.130 |
| Age (years) | 64.0 (11.1) | 56.1 (15.0) | 0.136 |
| Smokinga | 4 (19.0) | 3 (23.1) | 1.000 |
| Body mass index (kg/m2) | 23.9 (3.5) | 28.0 (6.9) | 0.049 |
| Bone mineral density (g/cm2) | 0.8 (0.2) | 0.8 (0.2) | 0.242 |
| T-score | -2.0 (1.3) | -1.2 (1.1) | 0.079 |
| Preoperative evaluation | |||
| ODI | 22.3 (9.8) | 20.9 (6.3) | 0.558 |
| VAS | 7.2 (1.9) | 6.2 (1.6) | 0.135 |
| 25(OH)VitD (ng/ml) | 26.8 (8.8) | 26.4 (12.9) | 0.607 |
| Calcium (mg/dl) | 8.9 (0.5) | 8.7 (0.7) | 0.424 |
| Operation data | |||
| Blood Loss (ml) | 300.5 (290.3) | 390.0 (288.2) | 0.206 |
| Operation time (min) | 166.2 (51.2) | 195.8 (57.6) | 0.106 |
| Number of fused vertebrae | 2.3 (0.5) | 2.8 (1.0) | 0.248 |
Abbreviation: ODI Oswestry Disability Index, VAS Visual analogue scale
a Data were presented as mean (standard deviation) or count (percentage)