Level of child development, current
Study	Outcome	Mean in control group	Mean in treatment group	Number of participants	Comments
Macours 2008	Level of language development, current Z‐score of Denver Developmental Screening Test (general language sub‐scale) score. Scale: unclear. (follow‐up: 8 to 9 months)	unclear	0.17 SDs higher (0.05 to 0.29 higher)	1577 children	Better indicated by higher values
Macours 2008	(follow‐up: 8 to 29 months after 12 months of the intervention)	—	0.10 SDs higher (0.01 lower to 0.21 higher)	1469 children	—
Macours 2008	Level of short‐term memory development, current Z‐score of McCarthy Scales of Children's Abilities score. Scale: unclear. (follow‐up: 8 to 9 months)	unclear	0.18 SDs higher (0.05 to 0.30 higher)	885 children	Better indicated by higher values
Macours 2008	(follow‐up: 8 to 29 months after 12 months of the intervention)	—	0.07 SDs higher (0.04 lower to 0.17 higher)	1454 children	—
Macours 2008	Level of fine motor development, current Z‐score of Denver Developmental Screening Test (fine motor sub‐scale) score. Scale: unclear. (follow‐up: 8 to 9 months)	unclear	0.09 SDs higher (0.04 lower to 0.23 higher)	1568 children	Better indicated by higher values
Macours 2008	(follow‐up: eight to 29 months after 12 months of the intervention)	—	0.15 SDs higher (0.06 to 0.25 higher)	1467 children	—
Macours 2008	Level of social‐personal development, current Z‐score of Denver Developmental Screening Test (social‐personal sub‐scale) score. Scale: unclear. (follow‐up: 8 to 9 months)	unclear	0.11 SDs higher (0.01 lower to 0.22 higher)	1585 children	Better indicated by higher values
Macours 2008	(follow‐up: 8 to 29 months after 12 months of the intervention)	—	0.09 SDs higher (0.03 lower to 0.22 higher)	1473 children	—