Comparison 2. Children: enhanced education versus control/usual care.

Outcome or subgroup title	No. of studies	No. of participants	Statistical method	Effect size
2.1 Correct inhaler technique (at follow‐up)	2	175	Odds Ratio (M‐H, Random, 95% CI)	1.29 [0.70, 2.36]
2.2 Inhaler technique (PIF immediately after intervention)	1		Mean Difference (IV, Random, 95% CI)	Totals not selected
2.3 Inhaler technique (PIF at follow‐up)	1		Mean Difference (IV, Random, 95% CI)	Totals not selected
2.4 Subgroup analysis: inhaler technique (at follow‐up): one‐off vs repeated sessions	2	175	Odds Ratio (M‐H, Random, 95% CI)	1.29 [0.70, 2.36]
2.4.1 One‐off	1	120	Odds Ratio (M‐H, Random, 95% CI)	1.37 [0.66, 2.83]
2.4.2 Repeated	1	55	Odds Ratio (M‐H, Random, 95% CI)	1.11 [0.37, 3.38]