Study No. | Study | Country | Study design | Selection | Comparability | Outcome / exposure | Overall | Bias |
---|---|---|---|---|---|---|---|---|
1 | Bellido-Blasco et al. 2012 [22] | Spain | Case-control | 3 | 2 | 3 | 8 | Low |
2 | Braeckman et al. 2012 [32] | Belgium | Case-control | 3 | 2 | 3 | 8 | Low |
3 | Carvalho-Costa et al. 2009 [25] | Brazil | Case-control | 2 | 0 | 1 | 3 | High |
4 | Castilla et al. 2012 [31] | Spain | Case-control | 3 | 2 | 3 | 8 | Low |
5 | Correia et al. 2010 [35] | Brazil | Case-control | 3 | 1 | 3 | 8 | Moderate |
6 | Cortese et al., 2011 [36] | USA | Case-control | 3 | 2 | 3 | 8 | Low |
7 | Cortese et al. 2013 [37] | USA | Case-control | 3 | 2 | 3 | 8 | Low |
8 | Cotes-Cantillo et al. 2014 [29] | Colombia | Case-control | 3 | 2 | 3 | 8 | Low |
9 | de Palma et al. 2010 [38] | El Salvador | Case-control | 3 | 2 | 3 | 8 | Low |
10 | Desai et al. 2010 [39] | USA | Case-control | 3 | 2 | 2 | 7 | Low |
11 | Donauer et al. 2013 [45] | USA | Case-control | 2 | 2 | 2 | 6 | Low |
12 | Guh et al. 2011 [40] | USA | Case-control | 4 | 1 | 3 | 9 | Moderate |
13 | Ichihara et al. 2014 [41] | Brazil | Case-control | 3 | 2 | 2 | 7 | Moderate |
14 | Justino et al. 2011 [33] | Brazil | Case-control | 4 | 2 | 3 | 9 | Low |
15 | Martinon-Torres et al. 2011 [24] | Spain | Case-control | 4 | 0 | 2 | 6 | High |
16 | Mast et al. 2011 [16] | Nicaragua | Case-control | 3 | 2 | 1 | 7 | Moderate |
17 | Muhsen et al. 2010 [42] | Israel | Case-control | 3 | 2 | 1 | 6 | Moderate |
18 | Patel et al. 2009 [26] | Nicaragua | Case-control | 4 | 2 | 3 | 9 | Low |
19 | Patel et al. 2012 [27] | Nicaragua | Case-control | 4 | 2 | 2 | 8 | Low |
20 | Patel et al. 2013 [43] | Bolivia | Case-control | 3 | 2 | 3 | 8 | Low |
21 | Payne et al. 2013 [28] | USA | Case-control | 3 | 2 | 2 | 7 | Low |
22 | Snelling et al. 2009 [44] | Australia | Case-control | 3 | 2 | 3 | 8 | Low |
23 | Staat et al. 2011 [34] | USA | Case-control | 3 | 2 | 2 | 7 | Low |
24 | Eberly et al. 2011 [23] | USA | Cohort | 3 | 0 | 3 | 6 | High |
25 | Fontes-Vieira et al. 2011 [17] | Brazil | Cohort | 3 | 0 | 2 | 5 | High |
26 | Muhsen et al. 2011 [18] | Israel | Cohort | 3 | 1 | 3 | 7 | Moderate |
27 | Nolan et al. 2012 [19] | USA | Cohort | 4 | 2 | 3 | 9 | Low |
28 | Panozzo et al. 2014 [30] | USA | Cohort | 4 | 2 | 3 | 9 | Low |
29 | Wang et al. 2010 [20] | USA | Cohort | 4 | 1 | 3 | 8 | Moderate |
30 | Wang et al. 2013 [21] | USA | Cohort | 4 | 1 | 3 | 8 | Moderate |