Table 1 Summary of studies included in the meta-analysis
Author | Region | Study design | Year | Study period | Sample size | Conversion (%) | Follow-up (month) | Recurrence | Quality scores | |||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Â | Â | Â | Â | Â | LAP | OPEN | Â | LAP | OPEN | LAP | OPEN | Â |
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 | Â | 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 |