Delayed Onset Postoperative Spinal Epidural Hematoma after Lumbar Spinal Surgery: Incidence, Risk Factors, and Clinical Outcomes

Table 5

Multiple logistic regression analysis.

	Adjusted OR	95% CI	value
Group A (early onset)
Multilevel procedure	5.62	1.84-17.25	0.002
Postoperative SBP	1.10	1.06-1.15	<0.05
Abnormal coagulation	5.68	1.74-18.52	0.004
Group B (delayed onset)
Postoperative SBP	1.10	1.04-1.16	0.001
Previous spinal surgery at the same level	4.74	1.09-20.70	0.038

OR: odds ratio; CI: confidence interval.