Table 3.
Comparisons of clinical parameters between three groups in the sagittal plane
| Group T9-10 (n = 22) | Group T11-12 (n = 33) | Group L1-2 (n = 40) | P value | |
|---|---|---|---|---|
| Age (years) | 56.2 ± 4.2 | 59.4 ± 7.1 | 60.2 ± 4.3 | 0.18 |
| Sex ratio (M/F) | 10:12 | 13:20 | 14:26 | 0.10 |
| BMI (kg/m2) | 23.8 ± 6.7 | 22.4 ± 6.9 | 22.9 ± 5.1 | 0.55 |
| No. of fused levels | 7.8 ± 0.9 | 6.1 ± 1.0 | 4.5 ± 0.9 | 0.00 |
| Operation time (h) | 5.9 ± 1.8 | 4.8 ± 1.7 | 3.9 ± 1.3 | 0.03 |
| Blood loss (ml) | 1240 ± 210 | 780 ± 180 | 690 ± 120 | 0.04 |
| In-bed time (d) | 8.8 ± 1.2 | 6.0 ± 0.8 | 4.7 ± 1.1 | 0.026 |
| Hospital stays (d) | 23.2 ± 4.3 | 15.6 ± 2.7 | 13.3 ± 3.6 | 0.001 |
| Pre-op ODI | 33.8 ± 7.6 | 32.0 ± 6.8 | 32.7 ± 9.7 | 0.33 |
| Post-op ODI | 11.2 ± 5.9 | 13.5 ± 6.9 | 10.9 ± 4.4 | 0.068 |
BMI indicates body mass index; Pre-op indicates pre-operative; Post-op indicates post-operative.