Table 1.

MMSE and incidence of POCD

	Cases size (n)	MMSE		POCD (n, (%))
		Before surgery	After surgery
Dex group	87	28.24 ± 5.18#	25.86 ± 4.10*,**	8 (9.20)**
Control group	61	28.51 ± 5.42	23.29 ± 4.59*	13 (21.31)

^* P < 0.05 vs before surgery;

^** P < 0.05 vs control group;

^# P > 0.05 vs control group.