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 |
|||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 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 |
LAP, laparoscopic surgery; NR, not reported; OCS, observational clinical study; OPEN, open surgery; P, prospectively collected data; R, retrospectively collected data.