Table 1 Characteristics of individual studies included in the meta-analysis
From: Prognostic significance of Epstein-Barr virus infection in gastric cancer: a meta-analysis
Study | Region | Year | EBV-positive/EBV-negative | Statistical methodology | HR estimation | Study quality score |
|---|---|---|---|---|---|---|
Gonzalez CA | Europe | 2003 | 4/83 | UA | HR + 95 % CI | 6/9 |
Chow WH | Europe | 1999 | 11/76 | UA | HR + 95 % CI | 5/9 |
Kim RH | Asia | 2010 | 18/229 | UA | HR + 95 % CI | 9/9 |
Gulley ML | Americas | 1996 | 11/84 | UA | HR + 95 % CI | 8/9 |
Corvalán A | Americas | 2005 | 22/71 | UA | HR + 95 % CI | 9/9 |
van Beek J | Europe | 2004 | 41/525 | UA | survival curves | 8/9 |
He Y | Asia | 2012 | 21/97 | UA | HR + 95 % CI | 7/9 |
Herrera-Goepfert R | Americas | 2005 | 8/127 | UA | HR + 95 % CI | 5/9 |
Corvalan A | Americas | 2001 | 27/118 | UA | HR + 95 % CI | 6/9 |
Koriyama C | Asia | 2007 | 49/100 | UA | HR + 95 % CI | 8/9 |
Boysen T | Europe | 2011 | 18/168 | UA | HR + 95 % CI | 7/9 |
Nakao M | Asia | 2011 | 20/351 | UA | HR + 95 % CI | 5/9 |
Sukawa Y | Asia | 2012 | 18/204 | UA | HR + 95 % CI | 7/9 |
Chiaravalli AM | Europe | 2006 | 18/78 | UA | RR + 95 % CI | 7/9 |
Gao Y | Asia | 2009 | 21/1018 | UA | HR + 95 % CI | 7/9 |
Kijima Y | Asia | 2003 | 25/334 | UA | HR + 95 % CI | 9/9 |
Koriyama C | Asia | 2002 | 64/128 | MA | HR + 95 % CI | 6/9 |
Park ES | Asia | 2009 | 50/407 | MA | HR + 95 % CI | 7/9 |
Song HJ | Asia | 2010 | 123/405 | UA | HR + 95 % CI | 8/9 |
Grogg KL | Americas | 2003 | 7/103 | UA | RR + 95 % CI | 9/9 |
Zhao J | Asia | 2012 | 80/631 | UA | survival curves | 7/9 |
Huang SC | Asia | 2014 | 51/943 | UA | HR + 95 % CI | 8/9 |
Lee HS | Asia | 2004 | 63/1051 | UA | HR + 95 % CI | 7/9 |
Truong CD | Americas | 2009 | 12/223 | MA | RR + 95 % CI | 8/9 |