Table 2. The results of Mann-Whitney test between patients and control groups in serum uric acid concentration. * Statistic significant difference for p<0.05.

Mann-Whitney test	Ischemic stroke vs control group (24-48 h) (n = 100)	Ischemic stroke vs control group 7 days (n = 100)	Ischemic stroke vs control group 14 days (n = 100)	Ischemic stroke vs vascular dementia (24-48 h) (n = 100)	Ischemic stroke vs vascular dementia 7 days (n = 100)	Ischemic stroke vs vascular dementia 14 days (n = 100)	VD vs control group (n=100)
Mann-Whitney U	3632.0	3004.0	3090.0	1183.5	1161.0	1148.0	925.0
Z	3.343	4.877	4.667	0.458	0.614	0.700	2.241
p	0.0008*	< 0.0001*	< 0.0001*	0.646	0.539	0.484	0.025*