Table 6.

Effect sizes only in DMT studies.

Construct	k	Mean ES	CI	SE	p	Q	p	I2 %
Overall	21	0.35***	0.23–0.46	0.059	<0.001	20.72	0.414	3.47
Quality of life	10	0.32*	0.02–0.63	0.155	0.036	1.50	0.997	n.s.
Affect	12	0.51**	0.18–0.85	0.171	0.003	9.49	0.577	n.s.
Interpersonal skills	6	0.49	0.00–0.97	0.249	0.051	0.43	0.994	n.s.
Cognitive skills	3	0.26*	(−0.48)−0.99	0.268	0.011	0.23	0.890	n.s.
Motor skills	2	0.30	(−0.28)−0.88	0.297	0.315	0.14	0.712	n.s.

k, number of studies; ES, effect size; CI, confidence interval; SE, sampling error;

^*p < 0.05;

^**p < 0.01;

^***p < 0.001; Q, parameter of heterogeneity.