Comparing mortality rate among the surgical approach groups. *All cohorts were statistically different from one another in every possible combination (p<0.0001), except the difference between the anterior techniques and laminoplasty cohorts was not statistically significant (p>0.05).
| Anterior | Posterior Decompression Only | Decompression with Posterior Fusion | Combined AP | P-value |
|---|---|---|---|---|
| 0.33% | 0.43% | 0.64% | 1.06% | <0.0001 |