Table 2.
The AQUA tool—tabular display
| Study | Risk of bias | ||||
|---|---|---|---|---|---|
| Objective(s) and study characteristics | Study design | Methodology characterization | Descriptive anatomy | Reporting of results | |
| Alleyne 1998 | High | Low | High | Low | Low |
| Amako 2011 | Low | Low | High | Low | Low |
| Bachet 1996 | High | Low | High | High | Low |
| Backes 2008 | High | Low | High | Low | Low |
| Biglioli 2004 | Low | Low | High | High | Low |
| Bley 2010 | Low | Low | High | Low | Low |
| Boll 2006 | High | Low | High | High | Low |
| Bowen 1996 | High | Low | High | Low | Low |
| Champlin 1994 | High | Low | High | Low | Low |
| Charles 2011 | High | Low | High | Low | Low |
| Fanous 2015 | High | Low | High | Low | Low |
| Fereshetian 1989 | High | Low | High | Low | Low |
| Furukawa 2010 | High | Low | High | Low | Low |
| Gailloud 2013 | High | Low | High | Low | Low |
| Guzinski 2017 | High | Low | High | Low | Low |
| Heinemann 1998 | High | Low | High | Low | Low |
| Hyodoh 2005 | High | Low | High | High | Low |
| Hyodoh 2007 | High | Low | High | Low | Low |
| Hyodoh 2009 | High | Low | High | High | Low |
| Jaspers 2007 | High | Low | High | Low | Low |
| Kawaharada 2002 | High | Low | High | Low | Low |
| Kawaharada 2004 | High | Low | High | Low | Low |
| Kawaharada 2007 | High | Low | High | Low | Low |
| Kieffer 1989 | High | Low | High | High | Low |
| Kieffer 2002 | High | Low | High | Low | Low |
| Koshino 1999 | High | Low | High | Low | Low |
| Kovacs 2009 | High | Low | High | Low | Low |
| Kroszczynski 2013 | High | Low | High | Low | Low |
| Kudo 2003 | High | Low | High | Low | Low |
| Matsuda 2010 | High | Low | High | High | Low |
| Matsuda 2010a | High | Low | High | High | Low |
| Melissano 2009 | High | Low | Low | High | Low |
| Mordasini 2012 | High | Low | Low | High | Low |
| Morishita 2003 | High | Low | High | Low | Low |
| Murthy 2010 | Unclear | Low | High | Low | Low |
| Nakayama 2008 | High | Low | Low | Low | Low |
| Nijenhuis 2004 | High | Low | Unclear | Low | Low |
| Nijenhuis 2007 | High | Low | High | Low | Low |
| Nijenhuis 2007a | High | Low | High | Low | Low |
| Nishida 2014 | High | Low | Low | High | Low |
| Nishii 2013 | High | Low | Low | High | Low |
| Nojiri 2007 | High | Low | High | Low | Low |
| Ogino 2006 | High | Low | High | High | Low |
| Ou 2007 | High | Low | Unclear | High | Low |
| Polaczek 2014 | High | Low | High | Low | Low |
| Rodriguez-Baeza 1991 | High | Low | High | Low | Low |
| Schurink 2007 | High | Low | High | Low | Low |
| Sukeeyamonon 2010 | High | Low | Low | High | Low |
| Takagi 2015 | High | Low | Low | Low | Low |
| Takase 2002 | High | Low | High | Low | Low |
| Takase 2007 | High | Low | High | High | Low |
| Tanaka 2016 | High | Low | High | Low | Low |
| Uotani 2008 | High | Low | High | Low | Low |
| Utsunomiya 2008 | High | Low | High | Low | Low |
| Williams 1991 | High | Low | High | Low | Low |
| Yamada 2000 | High | Low | High | Low | Low |
| Yingbin 2013 | High | Low | High | Low | Low |
| Yoshioka 2003 | High | Low | High | Low | Low |
| Yoshioka 2006 | High | Low | High | Low | Low |
| Zhao 2009 | High | Low | High | Low | Low |