Comparison 2. Myofunctional therapy versus waiting list.

Outcome or subgroup title	No. of studies	No. of participants	Statistical method	Effect size
2.1 Daytime sleepiness (ESS): change from baseline. Follow‐up: 4 months	1		Mean Difference (IV, Random, 95% CI)	Totals not selected
2.2 Daytime sleepiness (ESS): endpoint score. Follow‐up: 4 months	1		Mean Difference (IV, Random, 95% CI)	Totals not selected
2.3 Sleep quality (PSQI): change from baseline. Follow‐up: 4 months	1		Mean Difference (IV, Random, 95% CI)	Totals not selected
2.4 Sleep quality (PSQI): endpoint score. Follow‐up: 4 months	1		Mean Difference (IV, Random, 95% CI)	Totals not selected
2.5 AHI: change from baseline. Follow‐up: 4 months	1		Mean Difference (IV, Random, 95% CI)	Totals not selected
2.6 AHI: endpoint score. Follow‐up: 4 months	1		Mean Difference (IV, Random, 95% CI)	Totals not selected