Effects of repetitive transcranial magnetic stimulation on electroencephalogram and memory function in patients with mild cognitive impairment

Table 3 Comparison of changes in Wechsler Memory Scale-Revised Chinese version subscale scores

	Control group (n = 82)			Research group (n = 98)
	Before treatment	After treatment	Net increase	Before treatment	After treatment	Net increase
Forward digit span (1–100)	7.05 ± 1.02	7.13 ± 1.92	0.09 ± 2.18	7.20 ± 2.58	7.93 ± 2.35a,b	0.72 ± 3.30
Backward digit span (100–1)	5.22 ± 1.86	5.49 ± 1.73	0.27 ± 2.46	5.43 ± 2.13	6.55 ± 1.76a,b	1.12 ± 2.05b
Cumulative calculations	7.03 ± 1.65	7.38 ± 2.11	0.35 ± 2.62	7.09 ± 2.32	8.00 ± 1.75a,b	0.91 ± 2.67
Visual recognition	6.09 ± 1.74	6.50 ± 1.95	0.41 ± 2.41	6.14 ± 2.17	7.09 ± 2.10a,b	0.95 ± 3.04
Visual reproduction	3.65 ± 1.50	3.74 ± 2.00	0.10 ± 2.57	3.59 ± 1.64	4.54 ± 2.06a,b	0.95 ± 2.58b
Associative learning	4.35 ± 1.96	4.78 ± 1.85	0.43 ± 2.66	4.43 ± 1.98	5.42 ± 1.77a,b	1.00 ± 2.66
Comprehension memory	5.50 ± 1.23	5.46 ± 1.37	-0.04 ± 1.97	5.46 ± 1.66	6.18 ± 1.47a,b	0.72 ± 2.12b
Digit span	4.78 ± 1.75	4.91 ± 1.81	0.13 ± 2.25	5.01 ± 1.82	5.82 ± 1.95a,b	0.81 ± 2.52

^aP < 0.05 vs research group before treatment.

^bP < 0.05 vs control group, t-test were used for comparison.