Table 2.

Methodological Quality of the Involved Studies According to the QUADAS Criteria

Study	Patient Spectrum	Selection Criteria	Reference Standard	Disease Progression Bias	Partial Verification Bias	Differential Verification Bias	Incorporation Bias	Text Details	Reference Standard Details	Text Review Details	Diagnostic Review Bias	Clinical Review Bias	Uninterpretable Results	Withdrawals Explained
Deron et al., 2011 [17]	Yes	Unclear	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes
Driessen et al., 2014 [12]	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yse	No	No	Yes	Yes	Yes
Grönroos et al., 2014 [10]	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes
Han et al., 2012 [18]	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes
Hoeben et al., 2014 [19]	Yes	Yes	Yes	Unclear	Yes	Yes	Yes	Yes	Yes	Unclear	Unclear	Yes	Yes	yes
Hoshikawa et al., 2011 [20]	Yes	Unclear	Yes	Unclear	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes
Jacob et al., 2001 [7]	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes
Jansen et al., 2012 [14]	Yes	Unclear	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Unclear	Unclear	Yes	Yes	Yes
Kitawaga et al., 2003 [21]	Yes	yes	Yes	Unclear	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes
Linecker et al., 2008 [11]	Yes	Unclear	Yes	Unclear	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes
Rasmussen et al., 2015 [15]	Yes	Unclear	Yes	Unclear	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes
Swartz et al, 2018 [23]	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes
Surov et al, 2016 [8]	Yes	Unclear	Yes	Unclear	Yes	Yes	Yes	Yes	Yes	No	No	Yes	Yes	Unclear
Surov et al, 2017 [9]	Yes	Unclear	Yes	Unclear	Yes	Yes	Yes	Yes	Yes	No	No	Yes	Yes	Unclear
Troost et al., 2007 [22]	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes
White et al., 2006 [13]	Yes	Unclear	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Unclear	Unclear	Yes	Yes	yes
Zhao et al., 2014 [16]	Yes	No	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	yes