Table 2 Summary of risk-of-bias assessment
Study | Study participation | Study attrition | Predictors | Outcome | Statistical analysis and cofounding | Performance of prediction tool | Overall bias |
|---|---|---|---|---|---|---|---|
Abu Hussein, 2014 | L | H | L | L | M | M | M |
Almagro, 2014 | L | H | L | L | M | M | M |
Ankjærgaard, 2017 | L | M | M | L | H | NA | M |
Bélanger, 2018 | L | H | M | L | L | NA | M |
Bloom, 2019 | L | H | L | L | L | L | L |
Cheng, 2020 | L | H | L | L | L | NA | L |
Coleta, 2008 | L | H | L | L | M | NA | M |
Duenk, 2017 | L | H | L | L | H | M | H |
Duman, 2015 | L | M | L | L | H | NA | M |
Edwards, 2011 | L | H | L | L | H | H | H |
Eriksen, 2010 | L | M | L | L | H | NA | M |
Fan, 2002 | M | H | M | L | L | M | H |
GarcÃa-Sanz, 2017 | M | H | L | L | M | NA | M |
Gavazzi, 2015 | L | H | L | L | M | NA | M |
Gudmundsson, 2006 | L | M | L | L | H | NA | M |
Guerrero, 2016 | L | H | M | L | M | NA | M |
Hallin, 2007 | L | H | L | L | M | NA | M |
Ho, 2014 | L | H | L | L | M | NA | M |
Hoong, 2017 | M | H | M | M | M | NA | H |
Horita, 2016 | L | M | L | L | M | M | M |
Hu, 2016 | L | M | M | L | M | NA | M |
Man, 2006 | M | H | L | L | L | M | M |
Marin, 2013 | M | H | L | L | M | M | H |
Martinez, 2008 | M | M | L | L | L | M | M |
Martinez-Rivera, 2012 | L | H | M | L | M | NA | M |
Morales, 2018 | L | H | L | L | M | M | M |
Navarro, 2015 | L | H | L | L | M | H | H |
Neo, 2017 | L | H | L | L | M | M | M |
Niksarlioǧlu, 2013 | L | H | L | L | L | NA | L |
Park, 2020 | L | H | L | L | M | M | M |
Pascual-Guardia, 2017 | M | H | L | L | H | H | H |
Philip, 2012 | L | H | H | L | L | NA | M |
Pinto-Plata, 2004 | L | M | L | L | M | NA | L |
Puhan, 2013 | L | L | L | L | M | M | L |
Ranieri, 2008 | L | H | L | L | M | NA | M |
Renom, 2010 | L | H | L | L | M | NA | M |
Shin, 2019 | L | H | L | L | M | NA | M |
Slenter, 2013 | L | M | L | L | M | NA | L |
Stolz, 2014 | L | H | L | L | L | M | M |
Yohannes, 2005 | L | H | L | L | H | M | H |
Zhan, 2020 | L | H | L | L | H | L | M |
Zimmermann, 2020 | L | M | M | L | M | NA | M |