TABLE 3.

Assessment of Risk of Bias

Year	Authors	Random sequence generation	Allocation concealment	Blinding	Incomplete outcome data	Selective reporting	Other bias
2003	Gabriels36	High	High	High	Low	Low	High
2003	Sturm12	High	High	High	High	High	High
2005	Abelson46	Low	Low	Low	Low	Low	High
2006	Rauch32	High	High	High	Low	Low	Low
2006	Greenberg18	High	High	High	Low	Low	Low
2008	Guehl47	High	High	High	Low	Low	High
2008	Mallet48	Low	Low	Low	Low	Low	Low
2010	Huff43	High	Low	Low	Low	Low	Uncertain
2010	Greenberg41	High	High	High	Low	Low	High
2010	Goodman1	Uncertain	Low	Low	Low	Low	Low
2010	Denys29	Low	Low	Low	Low	Low	High
2012	Roh42	High	High	High	Low	Low	Low
2013	Jimenez50	High	High	High	Low	High	Low
2014	Nair52	High	High	High	Low	Low	High
2014	Tsai33	High	High	Low	Low	Low	Low
2015	Mantione38	High	High	High	Low	Low	Low
2016	Hartmann37	High	High	High	Low	Low	Low
2016	Maarouf51	High	High	High	Low	Low	High
2016	Luyten30	Low	Low	Low	Low	Low	Low
2018	Farrand44	High	High	High	Low	Low	High
2018	Barcia34	Uncertain	Low	Low	Low	Low	Low
2019	Tyagi28	Low	Low	Low	Low	Low	Low
2019	Huys39	High	High	High	Low	Low	Low
2019	Baldermann40	High	High	High	Low	Low	Low
2019	Liebrand35	High	High	High	Low	Low	Uncertain
2019	Lee17	High	High	High	Low	Low	Low
2019	Park45	High	High	High	Low	Low	High
2019	Polosan49	Low	Low	Low	Low	Uncertain	Uncertain