Table 2.
Characteristics of the included studies.
| Study 1st Author | Year | Country | Patients | Period Start | End | Design | Procedure |
|---|---|---|---|---|---|---|---|
| Ahn | 2013 | Korea | retrospective | 2006 | 2009 | monocentric | EA |
| Alvarez-Sanchez | 2017 | France | retrospective | 05/1999 | 09/2013 | monocentric | EA |
| Amini | 2014 | USA | retrospective | 2004 | 2010 | register, multicentric | EA, SA, PD |
| Bellizzi | 2009 | USA | retrospective | NA | NA | monocentric | EA |
| Boix | 2009 | Spain | retrospective | 01/1995 | 02/2007 | monocentric | EA |
| Catalano | 2004 | USA | retrospective | 1998 | 2001 | mulitcentric | EA |
| Ceppa | 2013 | USA | retrospective | 1991 | 2010 | monocentric | EA, SA |
| Chang | 2014 | Korea | retrospective | 08/2002 | 06/2011 | monocentric | EA |
| Cheng | 2004 | USA | retrospective | 1994 | 2003 | monocentric | EA |
| Chung | 2018 | Korea | retrospective | 03/2006 | 03/2014 | monocentric | EA |
| De Palma | 2015 | Italy | retrospective | 2008 | 2013 | monocentric | EA |
| Demetriades | 2006 | Greece | retrospective | 1990 | 2004 | monocentric | SA |
| Desilets | 2001 | USA | retrospective | 1991 | 2000 | monocentric | EA |
| Dixon | 2005 | Canada | retrospective | 1992 | 2002 | mulitcentric | SA |
| Dubois | 2016 | Switzerland | retrospective | 2005 | 2015 | monocentric | EA, SA |
| Gao | 2016 | China | retrospective | 01/2001 | 12/2014 | monocentric | SA, PD |
| Grobmyer | 2008 | USA | retrospective | 01/1991 | 12/2006 | monocentric | SA |
| Harano | 2011 | Japan | retrospective | 11/1995 | 07/2009 | monocentric | EA |
| Hong | 2018 | Korea | retrospective | 2004 | 2016 | monocentric | SA |
| Hyun | 2017 | Korea | prospective, randomized | 01/2014 | 12/2015 | multicentric | EA |
| Igarashi | 2010 | Japan | retrospective | 10/2002 | 03/2009 | monocentric | EA |
| Irani | 2009 | USA | retrospective | 1997 | 2007 | monocentric | EA |
| Ismail | 2014 | Finland | retrospective | 2000 | 2012 | monocentric | EA |
| Jeanniard-Malet | 2011 | France | retrospective | 12/2003 | 11/2008 | monocentric | EA |
| Jung | 2009 | Korea | retrospective | 07/2003 | 06/2008 | monocentric | EA |
| Kahaleh | 2004 | USA | retrospective | 03/2000 | 05/2003 | monocentric | EA |
| Kang | 2017 | Korea | retrospective | 01/2007 | 07/2014 | multicentric | EA |
| Katsinelos | 2006 | Greece | retrospective | 1998 | 2004 | monocentric | EA |
| Kim a | 2013 | Korea | retrospective | 09/2005 | 03/2012 | monocentric | EA |
| Kim b | 2011 | Korea | retrospective | 01/1999 | 12/2008 | monocentric | EA, SA |
| Kim c | 2017 | Korea | retrospective | 01/2001 | 09/2016 | monocentric | EA, SA |
| Klein | 2018 | Australia | retrospective | 2018 | 06/2017 | monocentric | EA |
| Lee a | 2016 | Korea | prospective randomized | 01/2012 | 07/2014 | multicentric | EA |
| Lee b | 2016 | Korea | retrospective | 09/1994 | 06/2013 | monocentric | SA, PD |
| Ma | 2014 | USA | retrospective | 1999 | 2010 | multicentric | EA |
| Maguchi | 2003 | Japan | retrospective | 04/1997 | 10/2002 | monocentric | EA |
| Mansukhani | 2017 | India | retrospective | 2009 | 2015 | monocentric | SA |
| Napoleon | 2014 | France | prospective | 09/2003 | 01/2006 | mulitcentric | EA |
| Nguyen | 2010 | USA | retrospective | NA | NA | monocentric | EA |
| Norton | 2002 | USA | retrospective | 09/1997 | 11/1999 | monocentric | EA |
| Onkendi | 2014 | USA | retrospective | 1994 | 2009 | monocentric | EA, SA, PD |
| Ouaïssi | 2006 | France | retrospective | 1981 | 2004 | monocentric | SA |
| Patel | 2011 | USA | retrospective | 05/1996 | 08/2009 | monocentric | EA |
| Petrone | 2013 | Italy | retrospective | 10/2000 | 06/2009 | monocentric | EA |
| Poincloux | 2014 | France | retrospective | 2004 | 2011 | monocentric | EA |
| Ridtitid | 2014 | USA | retrospective | 07/1995 | 07/2012 | monocentric | EA |
| Salmi | 2012 | France | retrospective | 02/2002 | 12/2008 | monocentric | EA |
| Schneider | 2016 | Germany | prospective | 2001 | 2014 | monocentric | SA |
| Shim | 2014 | Korea | retrospective | 09/2006 | 04/2012 | monocentric | EA |
| Stiles | 2018 | USA | retrospective | 2004 | 2014 | register, multicentre | SA, PD |
| Treitschke | 1999 | Germany | retrospective | 1983 | 1999 | monocentric | SA, PD |
| Tsuji | 2015 | Japan | retrospective | 05/1999 | 04/2014 | monocentric | EA |
| Van der Wiel | 2018 | The Netherlands | retrospective | 2002 | 2016 | monocentric | EA |
| Will | 2013 | Germany | prospective | NA | NA | multicentric | EA |
| Yamamoto | 2018 | Japan | retrospective | 05/1999 | 12/2016 | monocentric | EA |
| Yamao | 2010 | Japan | retrospective | 09/2000 | 06/2008 | monocentric | EA |
| Yoon | 2005 | Korea | retrospective | 1986 | 2002 | monocentric | PD |
| Yoon | 2007 | Korea | retrospective | 1996 | 2006 | monocentric | EA, SA |
| Zadorova | 2001 | Czech Republic | retrospective | 1994 | 1999 | monocentric | EA |
EA: endoscopic ampullectomy, SA: surgical ampullectomy, PD: pancreaticoduodenectomy.