Table 2.

Venous blood free radicals concentration on admission and after at least 72 h from the SAH onset

Blood free radicals concentration (mmol/dm3)	Study group—DCI patients	Study group—non-DCI patients	Control group	p
On admission
Mean ± SEM	1.18 ± 0.48	0.55 ± 0.16	0.48 ± 0.12	.3*
95% CI	−0.13–2.50	0.20–0.90	0.19–0.78
Median	0.48	0.34	0.49
IQR	1.96	0.35	0.57
After ≥72 H
Mean ± SEM	3.18 ± 1.52	0.65 ± 0.37		.012**
95% CI	0.70–7.07	−0.19–1.49
Median	2.07	0.34
IQR	5.07	0.26

SEM standard error of the mean, 95% CI 95% confidence interval, IQR interquartile range

^* p for Kruskal–Wallis’ statistics

^** p for Mann–Whitney’s statistics