Table 3.

Multivariate analysis of factors affecting the need for DC.

Parameter	p	aOR	95% CI
WFNS 4/5	0.158	1.64	0.83–3.27
Fisher 3/4	0.715	1.31	0.31–5.50
Age (> 65 years)	0.017	0.30	0.11–0.81
Conservative ICP therapy level 1	< 0.001	41.3	9.79–174.23
Conservative ICP therapy level 2	0.357	1.72	0.54–5.45
Optimal PaCo2 (30–38 mmHg)	0.042	0.27	0.08–0.96

Statistically significant p-values are marked bold.