Table 4.

Forward stepwise logistic analyses of factors related to postoperative seizures in CSDH patients.

Variable	B	SE	Wald test	p	Exp (B)	OR (95%CI)
Step 1 Trabecular hematoma	1.194	0.308	14.996	<0.001	3.301	1.804–6.042
Constant	−3.432	0.192	319.413	<0.001	0.032
Step 2 Brain infarction	1.163	0.331	12.308	<0.001	3.199	1.671–6.127
Trabecular hematoma	1.139	0.312	13.349	<0.001	3.125	1.696–5.758
Constant	−3.658	0.215	290.742	<0.001	0.026
Step 3 Cardiac disease	1.150	0.494	5.412	0.020	3.157	1.199–8.318
Brain infarction	1.063	0.338	9.873	0.002	2.896	1.492–5.621
Trabecular hematoma	1.122	0.314	12.790	<0.001	3.073	1.661–5.684
Constant	−3.711	0.218	289.568	<0.001	0.024
Step 4 Cardiac disease	1.011	0.502	4.053	0.044	2.749	1.027–7.358
Brain infarction	1.083	0.342	10.040	0.002	2.953	1.511–5.769
Trabecular hematoma	1.306	0.329	15.766	<0.001	3.690	1.937–7.030
Use of urokinase	−0.687	0.322	4.554	0.033	0.503	0.268–0.946
Constant	−3.413	0.246	192.617	<0.001	0.033
Step 5 Drinking	0.735	0.340	4.680	0.031	2.085	1.072–4.057
Cardiac disease	1.048	0.502	4.355	0.037	2.852	1.066–7.634
Brain infarction	1.134	0.342	10.964	0.001	3.108	1.588–6.080
Trabecular hematoma	1.344	0.330	16.583	<0.001	3.834	2.008–7.321
Use of urokinase	−0.707	0.322	4.821	0.028	0.493	0.262–0.927
Constant	−3.611	0.272	175.630	<0.001	0.027

CI, confidence interval.