Table 2.

Comparison of NSE, S100β, and MMSE scores

	Preoperative	Postoperative	Pa	Pb	Pc
NSE (µg·L–1)
Group I (n=20)	4.1±0.2	12.5±0.8	p<0.001	0.858	0.843
	4.2 (3.7–4.6)	12.6 (11.1–13.8)
Group II (n=20)	4.0±0.2	12.4±0.7	p<0.001
	4.0 (3.7–4.6)	12.1 (11.4–13.8)
S100β (µg·L–1)
Group I (n=20)	0.1±0.06	1.9±0.2	p<0.001	0.643	0.137
	0.2 (0.01–0.3)	1.9 (1.6–2.3)
Group II (n=20)	0.1±0.06	2.0±0.2	p<0.001
	0.2 (0.01–0.3)	1.9 (1.6–2.4)
MMSE
Group I (n=20)	28.1±1.5	25.1±1.4	p<0.001	0.587	0.521
	28 (26–31)	25 (23–27)
Group II (n=20)	27.9±1.6	24.8±1.5	p<0.001
	28 (26–31)	25 (23–27)

a - comparison of variables within the groups (preoperative-postoperative); b - comparison of preoperative variables; c - comparison of postoperative variables. MMSE-mini mental state examination; n - number of patients in each group; NSE - neuron specific enolase. Data are presented as mean±standard deviation and median (range). *Independent samples test and the Mann–Whitney U test between groups; Wilcoxon and paired samples tests between preoperative and postoperative values