Baseline comorbidities amongst the four surgical approaches. The cohort with the largest percentage of complications is shaded.
| Comorbidity | Percentage of Anterior | Percentage of Posterior Decompression Only Laminoplasty | Percentage of Laminectom Decompression with Posterior Fusion | Percentage of Combined AP | p-value |
|---|---|---|---|---|---|
| Anemia | 3.01 | 4.96 | 6.88 | 10.70 | <0.0001 |
| Rheumatoid arthritis/collagen vascular diseases | 2.60 | 2.67 | 5.54 | 5.93 | <0.0001 |
| Chronic blood loss anemia | 0.13 | 0.34 | 0.40 | 0.88 | <0.0001 |
| Congestive heart failure | 1.97 | 3.48 | 3.78 | 3.27 | <0.0001 |
| Chronic pulmonary disease | 15.65 | 16.50 | 17.90 | 18.31 | <0.0001 |
| Coagulopathy | 0.69 | 1.22 | 1.51 | 1.86 | <0.0001 |
| Diabetes | 16.94 | 20.63 | 21.61 | 18.53 | <0.0001 |
| Hypertension | 46.94 | 54.71 | 57.83 | 54.27 | <0.0001 |
| Liver disease | 0.50 | 0.79 | 0.86 | 0.75 | <0.0001 |
| Electrolyte imbalance | 3.13 | 6.35 | 9.08 | 14.60 | <0.0001 |
| Neurological disorder | 3.70 | 4.97 | 5.21 | 5.48 | <0.0001 |
| Obesity | 7.42 | 6.79 | 6.97 | 7.21 | <0.0001 |
| Peripheral vascular disorders | 1.73 | 2.62 | 2.84 | 2.17 | <0.0001 |
| Pulmonary circulation disorders | 0.35 | 0.55 | 1.00 | 0.97 | <0.0001 |
| Renal failure | 1.76 | 3.11 | 3.59 | 3.89 | <0.0001 |
| Cardiac valvular disorder | 2.45 | 3.01 | 3.25 | 2.96 | <0.0001 |
| Pathologic weight loss | 0.54 | 0.81 | 1.30 | 2.30 | <0.0001 |