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Main characteristics of the studies included in the meta-analysis.
| First author (ref) | Year | Country | Cases (n) | Method | Cut-off |
|---|---|---|---|---|---|
| Wolf (15) | 2007 | USA | 100 | IHC | Not mentioned |
| Habashy (16) | 2008 | UK | 880 | IHC | Median |
| Thorat (17) | 2008 | UK | 245 | IHC | 3 |
| Albergaria (18) | 2009 | UK | 249 | IHC | 3 |
| Liu (19) | 2010 | China | 213 | IHC | 3 |
| Hisamatsu (14) | 2011 | Japan | 239 | IHC | Median |
| Ijichi (20) | 2012 | Japan | 113 | IHC | 2 |
| Jiang (21) | 2012 | China | 113 | IHC | 3 |
IHC, immunohistochemistry.
