Table 4 Comparisons between the unplanned thrombin-gelatin matrix usage group and the routine usage group
| Â | Unplanned TGM usage | Routine TGM usage | p |
|---|---|---|---|
n | 714 | 1220 | Â |
Age (yrs) | 64.9 (16.5) | 65.4 (16.1) | 0.76 |
Sex (male, %) | 55.3% | 59.3% | 0.08 |
BMI | 24.3 (4.3) | 23.9 (4.2) | 0.11 |
Smoking | 11.9% | 9.5% | 0.10 |
ASA ≥ 2 | 85.4% | 85.5% | 0.97 |
Diabetes mellitus | 17.5% | 18.0% | 0.77 |
Rheumatoid arthritis | 2.8% | 3.9% | 0.22 |
Anticoagulation | 18.1% | 13.6% | 0.008 |
Number of levels operated | 3.5 (2.3) | 3.3 (1.9) | 0.83 |
Cervical | 20.0% | 22.8% | 0.16 |
Thoracic | 15.8% | 13.2% | 0.11 |
Lumbar | 72.7% | 71.4% | 0.54 |
Degenerative | 73.0% | 76.0% | 0.14 |
Trauma | 5.0% | 5.1% | 0.97 |
Deformity | 7.8% | 5.2% | 0.02 |
Infection | 1.4% | 2.2% | 0.21 |
Tumor | 5.3% | 3.9% | 0.13 |
Ligamentous ossification | 2.9% | 4.0% | 0.22 |
Anterior approach | 4.1% | 5.3% | 0.21 |
Posterior approach | 89.4% | 90.1% | 0.61 |
Emergency | 9.5% | 10.7% | 0.40 |
Revision | 17.1% | 14.5% | 0.13 |
Durotomy | 10.6% | 8.8% | 0.17 |
Instrumentation | 37.4% | 41.9% | 0.05 |
Interbody fusion | 19.0% | 23.2% | 0.03 |
Osteotomy | 3.6% | 1.3% | < 0.001 |
Microendoscopy | 44.1% | 23.5% | < 0.001 |