Comparison 7. Group cognitive stimulation versus no cognitive stimulation post‐treatment (dementia severity).

Outcome or subgroup title	No. of studies	No. of participants	Statistical method	Effect size
7.1 Cognition	23	1418	Std. Mean Difference (IV, Random, 95% CI)	0.43 [0.24, 0.62]
7.1.1 Mild impairment	10	640	Std. Mean Difference (IV, Random, 95% CI)	0.71 [0.47, 0.95]
7.1.2 Moderate impairment	13	778	Std. Mean Difference (IV, Random, 95% CI)	0.21 [0.03, 0.39]
7.2 MMSE	21	1325	Mean Difference (IV, Random, 95% CI)	2.16 [1.58, 2.74]
7.2.1 Mild impairment	10	676	Mean Difference (IV, Random, 95% CI)	2.59 [1.87, 3.31]
7.2.2 Moderate impairment	11	649	Mean Difference (IV, Random, 95% CI)	1.42 [0.78, 2.07]
7.3 ADAS‐Cog	14	979	Mean Difference (IV, Random, 95% CI)	2.52 [0.59, 4.46]
7.3.1 Mild impairment	6	373	Mean Difference (IV, Random, 95% CI)	4.98 [1.95, 8.00]
7.3.2 Moderate impairment	8	606	Mean Difference (IV, Random, 95% CI)	1.10 [‐0.29, 2.48]
7.4 Quality of life (self‐report)	11	903	Mean Difference (IV, Random, 95% CI)	2.41 [0.66, 4.17]
7.4.1 Mild impairment	3	276	Mean Difference (IV, Random, 95% CI)	1.54 [0.07, 3.00]
7.4.2 Moderate impairment	8	627	Mean Difference (IV, Random, 95% CI)	3.07 [0.77, 5.36]
7.5 Quality of life (proxy rated)	5	359	Std. Mean Difference (IV, Random, 95% CI)	0.45 [‐0.01, 0.90]
7.5.1 Moderate impairment	5	359	Std. Mean Difference (IV, Random, 95% CI)	0.45 [‐0.01, 0.90]
7.6 Mood: self‐reported	6	299	Std. Mean Difference (IV, Random, 95% CI)	0.20 [‐0.06, 0.45]
7.6.1 Mild impairment	4	220	Std. Mean Difference (IV, Random, 95% CI)	0.30 [0.01, 0.60]
7.6.2 Moderate impairment	2	79	Std. Mean Difference (IV, Random, 95% CI)	‐0.05 [‐0.53, 0.42]