Item | Chou et al. (2014) [20] | Pestana et al. (2010) [21] | Castellanos-Ortega et al. (2010) [32] | Patel et al. (2010) [33] | Shiramizo et al. (2011) [34] | Cardoso et al. (2010) [35] | Herrán-Monge et al. (2017) [36] | Lefrant et al. (2010) [37] | Leisman et al. (2017) [38] | Memon et al. (2012) [39] | Miller III et al. (2013) [40] | Sánchez et al. (2017) [41] | Thompson et al. (2016) [42] | van Zanten et al. (2014) [43] | Uvizl et al. (2016) [44] | Ferrer et al. (2009) [45] |
Question/objective sufficiently described? | 1 | 1 | 2 | 2 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 2 | 2 | 1 | 1 | 1 |
Study design evident and appropriate? | 2 | 1 | 1 | 1 | 2 | 2 | 1 | 1 | 2 | 1 | 1 | 2 | 2 | 1 | 1 | 1 |
Method of subject/comparison group selection or source of information/input variables described and appropriate? | 1 | 1 | 2 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 2 | 2 | 2 | 1 | 2 |
Subject (and comparison group, if applicable) characteristics sufficiently described? | 1 | 2 | 2 | 1 | 2 | 1 | 2 | 1 | 2 | 1 | 2 | 2 | 2 | 2 | 2 | 2 |
If interventional and random allocation was possible, was it described? | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA |
If interventional and blinding of investigators was possible, was it reported? | NA | NA | NA | NA | NA | NA | NA | NA | 1 | NA | NA | NA | NA | NA | NA | NA |
If interventional and blinding of subjects was possible, was it reported? | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA |
Outcome and (if applicable) exposure measure(s) well defined and robust to measurement/misclassify cation bias? Means of assessment reported? | 2 | 1 | 2 | 2 | 1 | 1 | 1 | 1 | 1 | 2 | 1 | 2 | 1 | 2 | 2 | 2 |
Sample size appropriate? | 0 | 2 | 2 | 1 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 |
Analytic methods described/justified and appropriate? | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 2 | 1 | 1 | 1 |