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Table 1 Summary of studies included in the meta-analysis

From: Laparoscopic versus open resection for gastric gastrointestinal stromal tumors: an updated systematic review and meta-analysis

Author Region Study design Year Study period Sample size Conversion (%) Follow-up (month) Recurrence Quality scores
      LAP OPEN   LAP OPEN LAP OPEN  
Shimizu et al. [20] Japan OCS (R) 2002 1986-2000 11 8 0 NR NR NR NR 7
Matthews et al. [21] USA OCS (R) 2002 1994-2000 21 12 NR 20 18 1 1 7
Ishikawa et al. [22] Japan OCS (R) 2006 1993-2004 14 7 NR 60 (5 to 119) 61 (3 to 130) 2 1 8
Mochizuki et al. [23] Japan OCS (R) 2006 2000-2004 12 10 NR 26 (6 to 53) NR 0 0 8
Nishimura et al. [24] Japan OCS (R) 2007 1993-2004 39 28 2.6 18.9 (2.6 to 96.4) 31.2 (4.4 to 121.9) 1 4 9
Pitsinis et al. [25] UK OCS (P) 2007 2004-2006 6 7 NR 9 9 0 0 6
Catena et al. [26] Italy OCS (P) 2008 1995-2006 21 25 NR 35 (5 to 58) 91 (80 to 136) 0 1 9
Silberhumer et al. [27] Austria OCS (R) 2009 1998-2006 22 41 18.2 30 ± 20 41 ± 31 0 4 8
Goh et al. [28] Singapore OCS (R) 2010 2001-2009 14 39 7.1 8 (3 to 60) 21(2 to 72) 0 2 7
Karakousis et al. [29] USA OCS (P) 2011 1998-2009 40 40 22.5 28 (0.3 to 70) 43 (0.1 to 139) 1 1 9
Dai et al. [30] China OCS (R) 2011 2000-2009 18 30 NR 78 64 2 3 9
De Vogelaere et al. [31] Belgium OCS (P) 2012 1997-2011 37 16 NR 83 (2 to 163) 71 (0.3 to 199) 0 6 8
Melstrom et al. [32] USA OCS (P) 2012 1999-2008 17 29 5.9 32 59 0 4 7
Lee et al. [33] Korea OCS (R) 2011 2001-2008 50 50 2 21.1 (0 to 64) 22.3 (0 to 93) 0 0 9
Wan et al. [34] China OCS (R) 2012 2004-2011 68 88 NR 29 (4 to 89) 36 (4 to 90) 3 4 9
Pucci et al. [35] USA OCS (P) 2012 2002-2012 57 47 1.8 NR NR NR   7
Kim et al. [36] Korea OCS (R) 2012 1998-2011 24 14 NR 62.6 (8.9 to 164.4) 58.3 (18.8 to 123.2) 1 3 7
Shu et al. [37] China OCS (R) 2013 2010-2012 15 21 NR NR NR N NR 8
Lee et al. [38] Taiwan OCS (R) 2013 2007-2009 30 32 NR NR NR NR NR 8
Kasetsermwiriya et al. [39] Japan OCS (R) 2014 1988-2011 23 10 NR 46 (2 to 168) 19 (1 to 275) 0 1 8
Lin et al. [40] China OCS (R) 2014 2007-2012 23 23 4.3 34 (6 to 78) 2 3 9
Takahashi et al. [41] Japan OCS (R) 2014 1995-2011 12 15 25 57 (7 to 120) 69 (13 to 154) 1 2 8
  1. LAP, laparoscopic surgery; NR, not reported; OCS, observational clinical study; OPEN, open surgery; P, prospectively collected data; R, retrospectively collected data.