eTable 3. QUADAS-2 risk of bias and applicability concerns: overview of all included studies.
| Study | Risk of bias | Applicability concerns | |||||
| First author, year (reference) | Patient selection | Index test | Reference standard | Flow and timing | Patient selection | Index test | Reference standard |
| Collins 1968 (e1) |
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| Stein 1970 (e2) |
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| Latimer 1971 (e3) |
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| Appleberg 1974 (e4) |
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| Gracey 1979 (e5) |
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| Crapo 1986 (e6) |
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| Fogh 1987 (e7) |
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| Poe 1988 (e8) |
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| Roukema 1988 (e9) |
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| Svensson 1991 (e10) |
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| Kispert 1992 (e11) |
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| Kroenke 1992 (e12) |
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| Rao 1992 (e13) |
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| Williams-Russo 1992 (e14) |
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| Kroenke 1993 (e15) |
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| Moriyama1994 (e16) |
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| Kocabas 1996 (e17) |
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| Lawrence 1996 (e18) |
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| Barisione 1997 (e19) |
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| Mitchell 1998 (e20) |
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| Pereira 1999 (e21) |
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| Fuso 2000 (e22) |
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| Girish 2001 (e23) |
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| McAlister 2003 (e24) |
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| Ong 2004 (e25) |
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| McAlister 2005 (e26) |
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| Kanat 2007 (e27) |
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| Joo 2009 (e28) |
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| Silva 2010 (e29) |
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| Ferguson 2011 (e30) |
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| Sunpaweravong 2012 (e31) |
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| Huh 2013 (e32) |
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| Jeong 2013 (e33) |
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| Inokuchi 2014 (e34) |
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| Jeong 2014 (e35) |
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| Clavellina-Gaytán 2015 (e36) |
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| Kim HJ 2016 (e37) |
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| Kim TH 2016 (e38) |
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| Miki 2016 (e39) |
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| Reinersmann 2016 (e40) |
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| Atilla 2017 (e41) |
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| Shin 2017 (e42) |
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| Tajima 2017 (e43) |
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| Hirosako 2018 (e44) |
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| Oh 2018 (e45) |
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| Sankar 2020 (e46) |
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QUADAS-2 rating: low, high, unclear
QUADAS, Quality Assessment of Diagnostic Accuracy Studies