Table 3.

Multivariable cox regression for prediction of vasospasm-free survival.

Variable	Coefficient	Standard Error	Wald Z	p-value
Age	0.0091	0.0097	0.94	0.3481
Nonlinear	−0.0309	0.0119	−2.6	0.0094
SBP	0.0054	0.002	2.65	0.008
Female sex	−0.0291	0.1242	−0.23	0.8146
Hypertension	0.0826	0.123	0.67	0.5016
Tobacco Use	0.0501	0.1188	0.42	0.6733
Hunt Hess Grade 4–5	0.2653	0.128	2.07	0.0383
Modified Fisher Grade 3	0.3444	0.181	1.9	0.0571
Modified Fisher Grade 4	0.592	0.2101	2.82	0.0048
IPH	−0.0908	0.135	−0.67	0.5012
IVH	0.1349	0.1727	0.78	0.4348

IPH: intraparenchymal hemorrhage; IVH: intraventricular hemorrhage