Table 3.

Risk of bias summary by study.

References	Sequence	Allocation	Blinding of	Incomplete	Selective	Validity of	Baseline
	generation	concealment	outcome assessment	outcome data	reporting	outcome reporting	comparability
Blake et al. (2019)
Carter et al. (2020)
Chau et al. (2014)
Chau et al. (2014)
De Cocker et al. (2016)
Danquah et al. (2017)
Dunning et al. (2018)
Dutta et al. (2014)
Edwardson et al. (2018)
Graves et al. (2015)
Healy et al. (2016)
Li et al. (2017)
Lithopoulos et al. (2020)
Mantzari et al. (2019)
Maylor et al. (2018)
Neuhaus et al. (2014)
Patel et al. (2021)
Pierce et al. (2019)
Puig-Ribera et al. (2015)
Rollo and Prapavessis (2020)
Tobin et al. (2016)
Lithopoulos et al. (2020)

High risk of bias; Low risk of bias; Unclear risk of bias.