Table 4.

Multiple logistic regression analysis results of the risk factors associated with post-operative hematoma recurrence.

Risk factor	OR	95% CI	p-value
INET application (No)	Reference
INET application (Yes)	3.71	1.31–9.62	0.02
Age>65 years	Reference
Age ≤65 years	1.51	1.05–2.87	0.03
Bilateral subdural hematoma	Reference
Unilateral subdural hematoma	1.76	1.05–3.41	0.02

OR, odds ratio; CI, confidence interval; P-value of Wald test.