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Demographic and clinical data.
| Patients (n) | 52 |
| Age (years) | 67.6 ± 10.0 |
| Female | 38 (73.1%) |
| BMI (m/kg2) | 27.4 ± 3.3 |
| Pre-op VAS | 77.9 ± 21.8 |
| Pre-op ODI | 66.0 ± 16.8 |
| Olisthesis | 15.1% ± 5% |
| Spine levels | 52 |
| L1-2 | 2 (3.8%) |
| L2-3 | 9 (17.3%) |
| L3-4 | 14 (26.9%) |
| L4-5 | 27 (51.9%) |
| Blood loss (cc) | <50 |
| Surgery duration (min) | 73.2 ± 31.4 |
