Table 2.

Methodological Quality of Included Studies.

Study	Adequate sequence generation	Allocation concealment	Blinding	Incomplete outcome data addressed	Free of selective reporting	Free from baseline imbalance	Free from early stopping	Sample size calculation	Free from sources of funding bias
Vakil et al., 200116	Unclear	Yes	No	Yes	Yes	Yes	Yes	Yes	Yes
Lee et al., 200917	No	No	No	Yes	Yes	Yes	Yes	No	Yes
Kim et al., 201018	Yes	Yes	No	No	Yes	Yes	Yes	Yes	Yes
Lee et al., 200719	No	No	No	Yes	Yes	Yes	Yes	No	Yes
Moon et al., 201020	No	No	No	Yes	Yes	Yes	Yes	No	Yes
Park et al., 201021	Yes	Unclear	Unclear	Yes	Yes	Yes	Yes	Yes	Yes
Isayama et al., 200422	Yes	Yes	Unclear	Yes	Yes	Yes	No	Yes	Yes
Telford et al., 201023	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	No
Kullman et al., 201024	Yes	Yes	Unclear	Yes	Yes	Yes	Yes	Yes	Yes
Krokidis et al., 201025	Yes	Unclear	Unclear	Yes	Yes	Yes	Yes	No	Yes
Krokidis et al., 201126	Yes	Unclear	Unclear	Yes	Yes	Yes	Yes	Yes	Yes