Meta-analysis of the effect of cognitive stimulation therapy on cognitive function in patients with Alzheimer's disease

Table 1 Basic characteristics of the included literature

Ref.	Sample size (observation group/comparison group)	Age (years)	Frequency of cognitive stimulation therapy (times/week)
Arcoverde et al[40], 2014	26/26	76.78 ± 4.32	3
Qiang et al[41], 2022	55/55	81.06 ± 4.55	5
Zhao et al[42], 2019	30/30	73.78 ± 9.69	3
Zhao and Zhang[43], 2018	37/37	63.74 ± 6.65	3
Yang[44], 2019	21/21	69.34 ± 5.25	3
Jin and Hu[45], 2020	43/43	66.71 ± 3.56	5
Liu et al[46], 2020	93/93	72.34 ± 0.25	3
Liu et al[47], 2017	24/24	67.63 ± 2.32	3