Table 1.
Summary of studies included in the meta-analysis
| Reference | Year of study | Country | Study design | group | sample size | Mean/median size (cm) | Median FU(range, mo) | Quality score |
|---|---|---|---|---|---|---|---|---|
| Kim [25] | 2012 (1998–2011) | Korea | Retro | LAP | 24 | 6.1 | 62.6(8.9–164.4) | 17.5 |
| OPEN | 14 | 7.2 | 58.3(18.8–123.2) | |||||
| Lin [17] | 2014 (2007–2012) | China | Retro | LAP | 23 | 7.2 | 34.0(6–78) | 18 |
| OPEN | 23 | 7.3 | ||||||
| Hsiao [26] | 2014 (2002–2012) | Taiwan | Retro | LAP | 18 | 6.3 | 37.2(16.8–133.2) | 17 |
| OPEN | 21 | 6 | 67.2(12.0–133.2) | |||||
| Takahashi [27] | 2015 (1995–2011) | Japan | Retro | LAP | 15 | 5.5 | 57(7–120) | 16.5 |
| OPEN | 12 | 7.5 | 69(13–154) | |||||
| Piessen [28] | 2015 (2001–2013) | France | Retro | LAP | 90 | NA | NA | 17.5 |
| OPEN | 93 | |||||||
| Chun [29] | 2016(2002–2015) | Singapore | Retro | LAP | 23 | 6 | 20.5(0–163) | 17 |
| OPEN | 36 | 6 | 78(2–151) | |||||
| Our own study | 2015(2008–2015) | China | Retro | LAP | 13 | 6 | 48(26–78) | 17.5 |
| OPEN | 13 | 6 | 42(11–83) |
Retro retrospective observational study, LAP laparoscopic resection, OPEN open resection, FU follow up, mo months, NA not available