Trial* | Components of risk of bias/key risk criteria | Summary within trial | Comments on high risk components―(explain briefly why) | |||||
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Ando et al. (2018) | H | H | H | H | L | H | H = 5 L = 1 U = 0 | Selection bias: No identification of sequent generation or allocation concealment. Detection/Performance bias: No blinding of assessors mentioned. Other bias: No protocol. Choice of statistics questionable. |
Crogan et al. (2008) | H | H | H | H | L | H | H = 5 L = 1 U = 0 | Selection bias: No identification of sequent generation or allocation concealment. Detection/Performance bias: No blinding of assessors mentioned. Other bias: No protocol. Choice of statistics questionable. |
Garcia-Schinzari et al. (2014) | H | H | H | H | L | H | H = 5 L = 1 U = 0 | Selection bias: No identification of sequent generation or allocation concealment. Detection/Performance bias: No blinding of assessors mentioned. Other bias: No protocol. Choice of statistics questionable. Sample size not justified |
Falzon et al. (2015) | L | L | L | L | L | H | H = 1 L = 5 | Other bias: No protocol. |
Heiney et al. (2012) | H | H | L | L | L | H | H = 3 L = 3 | Selection bias: No identification of sequent generation or allocation concealment. Other bias: No protocol. Sample size not considered. |
Heiney et al. (2013) | H | H | L | L | L | H | H = 3 L = 3 | Selection bias: No identification of sequent generation or allocation concealment. Other bias: No protocol. Sample size not considered. Refers to Heiney et al. (2012) for procedures and methods. |
Heiney et al. (2015) | H | H | L | L | L | H | H = 3 L = 3 | Selection bias: No identification of sequent generation or allocation concealment. Other bias: No protocol. Sample size not considered. Refers to Heiney et al. (2012) for procedures and methods. |
Song et al. (2012) | H | H | H | H | L | H | H = 5 L = 1 U = 0 | Selection bias: No identification of sequent generation or allocation concealment. Detection/Performance bias: No blinding of assessors mentioned. Other bias: No protocol. Choice of statistics questionable. |