Table 3.

Description of risk of bias

	Randomised selection of subjects	Blinded (participants)	Blinded (investigator not informed of effects sought)	Results reported in full
Bor et al. (2011)	Yes	No	Yes	Yes
Haut et al. (2010)	Yes	No	NA	Yes
Hooker et al. (2012)	Yes	Yes	Yes	Yes
Keshavan et al. (2016)	Yes	NA	NA	Yes
Penadés et al. (2013)	Yes	No	Yes	Yes
Pu et al. (2014)	Yes, but groups not randomised	NA	NA	Yes
Subramaniam et al. (2014)	Yes	Yes	Yes	No
Vianin et al. (2014)	Yes	No	Yes	NA

NA, not available.