Table 1.
Demographic information.
| Characteristic | Statistic n = 40 |
|---|---|
| Mean age in years (stdev) (range) | 60.4 (12.2) (36–84) |
| Female (%) | 20 (50) |
| Mean body mass index (BMI), (stdev) (range) | 28.1 (4.4) (20–38) |
| Comorbidities (mean number per patient) | 63 (1.6) |
| Comorbidity type | |
| Tobacco use (%) | 5 (12.5) |
| Coronary artery disease (%) | 19 (47.5) |
| Diabetes (%) | 8 (20) |
| Chronic obstructive pulmonary disease (COPD) (%) | 2 (5) |
| Steroid use (%) | 3 (8) |
| Any prior lumbar/thoracic spine surgery (%) | 26 (65) |
| Prior surgery type | n = 26 |
| Discectomy (%) | 1 (5) |
| Laminectomy (%) | 18 (70) |
| Fusion (%) | 7 (25) |
| Diagnoses (mean number per patient) | 65 (1.6) |
| Degenerative disc disease (%) | 16 (40) |
| Spondylolisthesis (%) | 15 (38) |
| Postlaminectomy syndrome (%) | 12 (30) |
| Adjacent segment disease (%) | 5 (13) |
| Scoliosis (%) | 6 (15) |
| Retrolisthesis (%) | 1 (3) |
| Facet disease (%) | 5 (13) |
| Stenosis (%) | 4 (10) |
| Fracture (%) | 1 (3) |