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. 2019 Aug 22;19:150. doi: 10.1186/s12876-019-1050-9

Table 2.

Newcastle-Ottawa quality assessment scale of each included studies

Author Year S1 S2 S3 S4 C O1 O2 O3
Starzl TE [30] 1988
Bird GLA [12] 1990
Kumar S [31] 1990 ✹✹
Doffoel M[32] 1992
Knechtle SJ [33] 1992
Lucey MR [34] 1992 ✹✹
Berlakovich GA [35] 1994
Howard L [36] 1994
Osorio RW [37] 1994 ✹✹
Gerhardt TC [38] 1996 ✹✹
Tringali RA [39] 1996 ✹✹
Tripp LE [40] 1996
Zibari GB [41] 1996
Anand AC [42] 1997
Coffman KL [43] 1997
Everson G [44] 1997
Foster PF [24] 1997
Lucey MR [45] 1997
Reeck UH [46] 1997
Shakil AO [47] 1997
Stefanini GF [48] 1997
DiMartini A [49] 1998
Fabrega E [50] 1998
Heinemann A [51] 1998
Tang H [52] 1998 ✹✹
Conjeevaram HS [53] 1999 ✹✹
Gledhill J [54] 1999
Newton SE [55] 1999
Pageaux GP [18] 1999 ✹✹
Romano DR [56] 1999
Abosh D [57] 2000
Berlakovich GA [58] 2000
Burra P [59] 2000 ✹✹
DiMartini A [60] 2000
Jain A [61] 2000 ✹✹
Pereira SP [62] 2000
Platz KP [21] 2000
Bellamy CO [63] 2001
DiMartini A [64] 2001
Gish RG [65] 2001 ✹✹
Karman JF [66] 2001
Mackie J [15] 2001 ✹✹
Tome S [67] 2002
Berlakovich GA [68] 2004
Jauhar S [14] 2004 ✹✹
Miguet M [69] 2004
Björnsson E [20] 2005 ✹✹
Cuadrado A [10] 2005 ✹✹
DiMartini A [70] 2006
Hwang S [71] 2006
Kelly M [72] 2006 ✹✹
De Gottardi A [29] 2007 ✹✹
Dumortier J [73] 2007
Newton SE [74] 2007
Nickels M [75] 2007
Pfitzmann R [8] 2007 ✹✹
Vieira A [76] 2007
Wells JT [77] 2007
Gedaly R [23] 2008
Immordino G [17] 2009
Tandon P [26] 2009
Biselli M [78] 2010
Chen GH [79] 2010
DiMartini A [80] 2010
Karim Z [81] 2010 ✹✹
Hartl J [82] 2011 ✹✹
Mathurin P [7] 2011
Schmeding M [9] 2011
Staufer K [83] 2011
Faure S [84] 2012
Addolorato G [85] 2013 ✹✹
Deruytter E [86] 2013 ✹✹
Kawaguchi Y [87] 2013 ✹✹
Park YH [19] 2013 ✹✹
Rice JP [88] 2013 ✹✹
Rodrigue JR [89] 2013 ✹✹
Egawa H [16] 2014 ✹✹
Grąt M [90] 2014
Piano S [91] 2014
Dumortier J [92] 2015
Hasanin M [93] 2015
Satapathy SK [94] 2015
Zhou M [28] 2015 ✹✹
Askgaard G [95] 2016 ✹✹
Hajifathalian K [96] 2016
Im GY [97] 2016 ✹✹
Kollmann D [98] 2016
Lee BP [99] 2017 ✹✹
Onishi Y [100] 2017 ✹✹
Wigg AJ [101] 2017 ✹✹