Table 3.

Sectional and global quality rating of reviewed studies sorted by age group

Author, Year	Age Group	Sectional Rating								Global Rating
		Selection Bias	Study Design	Confounders	Blinding	Data Collection Methods	Withdrawals/Drop-Outs	Intervention Integrity	Analyses
Ducheyne et al., 2014 [47]	Children	Moderate	Strong	Weak	Weak	Moderate	Moderate	Weak	Weak	Weak
Huang et al., 2018 [49]		Weak		Moderate	Weak	Strong	Moderate		Strong	Weak
Mendoza et al., 2017 [50]		Moderate		Moderate	Weak	Strong	Strong		Strong	Weak
Østergaard et al., 2015 [45]		Moderate		Strong	Weak	Weak	Moderate		Weak	Weak
Villa-González et al., 2015 [51]		Moderate		Strong	Weak	Weak	Moderate		Weak	Weak
Villa-González et al., 2017 [52]		Moderate		Moderate	Weak	Moderate	Moderate		Strong	Weak
Børrestad et al., 2012 [44]	Children/Adolescents	Weak		Strong	Moderate	Strong	Strong		Weak	Weak
Christiansen et al., 2014 [46]		Moderate		Moderate	Weak	Weak	Moderate		Strong	Weak
Gutierrez et al., 2014 [48]		Moderate		Weak	Weak	Moderate	Weak		Weak	Weak