Study Year of
publication
Random
sequence
generation
Allocation
concealment
Blinding of
participants
and personnel
Blinding of
outcome
assessment
Incomplete
outcome data
addressed
Selective
reporting
Sexton et al. [2] 2011 low risk low risk low risk low risk low risk low risk
da Costa et al. [3] 2015 low risk low risk low risk low risk low risk low risk
Frodge et al. [4] 2008 low risk low risk low risk low risk low risk low risk
Rosa et al. [7] 2014 low risk unclear risk unclear risk unclear risk unclear risk low risk
Ma et al. [13] 2015 low risk low risk low risk low risk low risk low risk
Zhu et al. [14] 2015 low risk low risk low risk low risk low risk low risk
Oh et al. [15] 2015 low risk low risk low risk low risk low risk low risk
Miller et al. [16] 2006 low risk low risk low risk low risk low risk low risk
Ng et al. [17] 2007 low risk low risk low risk low risk low risk low risk
Scannapieco et al. [18] 2007 low risk low risk low risk low risk low risk low risk
Reinhardt et al. [19] 2010 low risk low risk low risk low risk low risk low risk
Noh et al. [20] 2013 low risk low risk low risk low risk low risk low risk
Kato et al. [21] 2014 low risk low risk low risk low risk low risk low risk
Liao et al. [22] 2014 low risk unclear risk unclear risk low risk low risk low risk
Singh et al. [23] 2014 low risk low risk low risk low risk low risk low risk