Table 4.

Multivariate Predictors of GOS Score (1−5)

Variable	Odds Ratio*(95% CI)	p-value
Age (per 1 year↑)	1.025 (1.011−1.040)	0.001
†WFNS: II vs. I	2.4 (1.7 − 3.5)	<0.001
WFNS: III vs. I	4.0 (2.0 − 7.9)	<0.001
Posterior aneurysm (vs. anterior)	2.5 (1.3 − 4.5)	0.004
Aneurysm size (per 1 mm ↑)	1.04 (1.01 − 1.07)	0.014
QTc (per 1 msec ↑)	1.004 (1.000 − 1.008)	0.071

^*Odds ratio indicates relative odds of a single category increase (worsening) in GOS score.

^†Omnibus P value for WFNS <0.001 with two degrees of freedom.

Model c-statistic = 0.671.