Table 1 Study characteristics
Author, year | NOS score | Country | Samplea size | Period | Complications type | Comparable | In-hospital death | 5-year RFSb | 5-year OSb | |
|---|---|---|---|---|---|---|---|---|---|---|
Pathological stage | Chemotherapy | |||||||||
Tsujimoto et al. 2009 [13] | 8 | Japan | 141/1191 | 1986–2005 | Infectious | Not | Not* | Excluded | NR | 57.9% vs. 78.1% |
Sierzega et al. 2010 [14] | 7 | Poland | 41/649 | 1999–2004 | Leakage | NR | NR | Involved | NR | NR |
Yoo et al. 2011 [15] | 6 | Korea | 32/446 | 2000–2005 | Leakage | Yes | NR | Involved | NR | 9.4% vs. 68.4% |
Nagasako et al. 2012 [16] | 6 | Japan | 37/363 | 1997–2008 | Anastomotic | NR | NR | Involved | NR | 81% vs. 94.2% |
Li et al. 2013 [17] | 7 | China | 51/378 | 2005–2006 | Overall | NR | NR | Involved | NR | 21.8%vs. 39.9% |
Tokunaga et al. 2013 [18] | 6 | Japan | 81/684 | 2002–2006 | Intra-abdominal infectious | Not | None | Involved | 64.9% vs. 84.5% | 66.4% vs. 86.8% |
Kubota et al. 2014 [19] | 7 | Japan | 207/981 | 2005–2008 | Overall CD ≥ 2 | Not | NR | Excluded | NR | 84.1% vs. 93.1% |
Hayashi et al. 2015 [20] | 7 | Japan | 52/450 | 2000–2005 | Infectious CD ≥ 2 | Not | None | None | NR | 58% vs. 83% |
Kim et al. 2015 [8] | 7 | Korea | 72/3755 | 2003–2012 | Leakage | NR | NR | None | NR | 70.8% vs. 79.3% |
Saito al. 2015 [9] | 6 | Japan | 86/219 | 2001–2012 | Overall CD ≥ 2 | NR | NR | NR | 53.4% vs. 70.5% | NR |
Jin et al. 2016 [21] | 6 | U.S.A | 336/488 | 2000–2012 | Overall | Not | Not | Excluded | 23% vs. 40% | 27% vs. 43% |
Abdul Kader et al. 2016 [22] | 7 | Japan | 38/227 | 1991–2010 | Intra-abdominal | Yes | Yes | Involved | NR | 24.6% vs. 69.2% |
Climent et al. 2016 [10] | 8 | Spain | 162/109 | 1990–2009 | Overall CD ≥ 2/infectious | Yes | Yes | Excluded | 46.9% vs. 54.1% | 48.1% vs. 56.9% |
Li et al. 2018 [23] | 8 | China | 86/172 | 2008–2015 | Overall CD > 2 | Yes | NA | Excluded | NA | 46.3% vs. 65.9% |
Eto et al. 2018 [11] | 9 | Japan | 35/66 | 2005–2015 | Overall CD ≥ 2 | Yes | Yes | None | 41.7% vs. 43.9% | 58.2% vs. 56.3% |
Watanabe et al. 2018 [12] | 7 | Japan | 134/296 | 1992–2010 | Overall CD > 2 | Not | Yes | Involved | 46.9% vs. 45.0% | 51.3% vs. 47.6% |