TABLE 3.

The cognitive function scores of volunteers.

Cognitive assessment	Volunteers as control group (n = 20)
	1st assessment	2nd assessment	SD(ΔXC)
MMSE	28.70 ± 1.03	28.35 ± 1.35	0.51
CTT	35.90 ± 3.46	34.76 ± 4.60	1.15
DST	7.76 ± 1.64	8.14 ± 1.11	1.04
CDT	3.62 ± 0.50	3.48 ± 0.51	0.43
VFT	26.81 ± 3.79	29.14 ± 3.90*	1.03

vs. 1st assessment, *p < 0.05.