“…A US nationwide dataset derived from hospital episode statistics was also included covering 2377 procedures coded as colectomy for constipation indications [19]. Specific exclusions after full-text review (and after exclusion of non-English language publications: n = 10) included 27 studies where the population sample was confirmed to be less than 20 patients, four studies of out of scope procedures, one study where data were considered duplicate [13], one where outcomes could not be segregated by eligible procedure [14], and one where data for multiple clinical indications for colectomy were merged [15]. [27] 1995 Cleveland Clinic, FL USA 54 27 RCS IV Redmond [21] 1995 John Hopkins, Baltimore USA 34 90 PCH IIB de Graaf [28] 1996 Rotterdam Netherlands 42 46 PCH IV Lubowski [29] 1996 Sydney Australia 52 42 RCS IV Platell [30] 1996 Perth Australia 96 60 RCS IV Pluta [31] 1996 Alberta Canada 24 65 RCS IV Ghosh [32] 1996 Edinburgh UK 21 96 RCS IV Nyam [33] 1997 Singapore Singapore 74 56 PCH IV Ho [34] 1997 Singapore Singapore 24 24 RCH IV You [35] 1998 Taiwan China 40 24 PCS IV Bernini [36] 1998 Mayo Clinic, MN USA 106 78 RCH IV Hasegawa [37] 1999 Birmingham UK 61 84 RCH IV Fan [38] 2000 Taiwan China 24 23 RCS IV Pikarsky [39] 2001 Cleveland Clinic, FL USA 62 105 RCH IV Pikarsky [40] 2001 Cleveland Clinic, FL USA 30 60 PCS IV Webster & Dayton [41] 2001 Cancun Mexico 50 12 RCS IV Mollen [42] 2001 Bennekom Netherlands 21 62 PCS IV Nylund [43] 2001 Goteburg Sweden 40 132 PCS IV Lundin [44] 2002 Uppsala Sweden 28 50 PCS IV Fitzharris [45] 2003 Mayo Clinic, MN USA 75 47 RCS IV Hassan [46] 2006 Mayo Clinic, MN USA 104 68 RCH IV Marchesi [47] 2007 Parma Italy 23 72 PCS IV Zutshi [48] 2007 Cleveland Clinic, OH USA 69 130 RCS IV Feng [22] 2008 Zheijang China 79 47 RCH IIB Hsiao…”