Binary multivariate logistic regression (backward Wald) analysis of the risk factors for haematoma.
| Variable | B | SE | P value | OR | 95% CI |
| Maximum MAP during recovery | 0.030 | 0.014 | 0.028 | 1.030 | 1.003 to 1.058 |
| ACCF | 0.900 | 0.324 | 0.006 | 2.459 | 1.302 to 4.642 |
| Constant | −4.914 | 1.514 | 0.001 | 0.007 |
ACCF, anterior cervical corpectomy and fusion; MAP, mean arterial pressure.