Table 3.

Meta-regression of global cognitive functioning with numeric variables for intervention length and participant age

Moderator	k	β	SE	95% CI	Z	p
Intervention length	7	− 0.001	0.002	[− 0.004, 0.002]	− 0.54	0.59
Participant age	6	− 0.04	0.09	[− 0.15, 0.22]	0.39	0.70

k number of studies included in the analysis, β meta-regression coefficient, SE standard error, 95% CI 95% confidence interval around the weighted mean effect size, Z value for testing statistical significance for one coefficient