Table 2.

Univariate and multivariate analysis for independent association with SAHiP

	Univariate (n = 129)	Multivariate logistic (n = 129)
	p value	OR (95% CI)	p value
Age	0.18	0.95 (0.96–0.98)	< 0.04
Gender	0.38	Included	0.73
Hunt and Hess grade	0.34	Included	0.38
Modified Fisher score	0.78	Included	0.6
Delayed cerebral ischemia	0.29
Smoking	0.3
Hypertension	0.3
Acetaminophen	0.2	0.21 (0.12–0.31)	< 0.001
Blood transfusion	0.6
Foley catheter duration (hours)	0.11	Included	0.62
Endotracheal tube duration (hours)	0.55
External ventriculostomy duration (hours)	0.4
Central venous line duration (hours)	0.035	0.98 (0.98–0.99)	< 0.05
Surgical management	0.4

The italics indicate that the variable was included in the multivariate logistic regression