Comparison 6. Memory.

Outcome or subgroup title	No. of studies	No. of participants	Statistical method	Effect size
6.1 Working memory (postintervention)	8	420	Std. Mean Difference (IV, Fixed, 95% CI)	0.45 [0.26, 0.65]
6.2 Working memory (Digit Span backwards) (postintervention)	2	54	Mean Difference (IV, Fixed, 95% CI)	0.21 [‐0.50, 0.93]
6.3 Working memory (Trail Making Test B) (follow‐up)	3	243	Std. Mean Difference (IV, Fixed, 95% CI)	‐0.18 [‐0.43, 0.08]
6.4 Working memory (follow‐up)	4	272	Std. Mean Difference (IV, Fixed, 95% CI)	‐0.17 [‐0.40, 0.07]
6.5 Immediate verbal memory span (postintervention)	8	357	Std. Mean Difference (IV, Fixed, 95% CI)	0.35 [0.14, 0.56]
6.6 Immediate spatial memory span (postintervention)	7	292	Std. Mean Difference (IV, Fixed, 95% CI)	0.27 [0.03, 0.50]
6.7 Immediate recall (postintervention)	3	184	Std. Mean Difference (IV, Fixed, 95% CI)	0.17 [‐0.12, 0.46]
6.8 Delayed recall (postintervention)	3	184	Std. Mean Difference (IV, Fixed, 95% CI)	0.35 [0.05, 0.66]
6.9 Memory span (follow‐up)	3	194	Std. Mean Difference (IV, Fixed, 95% CI)	0.17 [‐0.11, 0.45]