Table 1.
Main characteristics of included studies
| Study | Year | Country | Sample size
|
Method | Tissue or serum | ||
|---|---|---|---|---|---|---|---|
| Ovarian tumor | Benign ovarian tumor | Normal control | |||||
| He et al32 | 2011 | People’s Republic of China | 26 | 40 | 30 | Immunohistochemistry and ELISA | Tissue and serum |
| Zhou et al29 | 2011 | People’s Republic of China | 56 | 18 | 20 | Immunohistochemistry | Tissue |
| Liu et al33 | 2011 | People’s Republic of China | 56 | 24 | 20 | Immunohistochemistry | Tissue |
| Wei31 | 2012 | People’s Republic of China | 46 | 24 | 20 | Immunohistochemistry | Tissue |
| Chen and Yuan30 | 2012 | People’s Republic of China | 75 | Not mentioned | 40 | Immunohistochemistry | Tissue |
| Xiao et al35 | 2014 | People’s Republic of China | 55 | Not mentioned | 18 | Immunohistochemistry | Tissue |
| Kong37 | 2014 | People’s Republic of China | 32 | 79 | 45 | ELISA | Serum |
| Zhi et al28 | 2014 | People’s Republic of China | 40 | 60 | 30 | Immunohistochemistry | Tissue |
| Li et al38 | 2014 | People’s Republic of China | 105 | 46 | 33 | ELISA | Serum |
| Li et al39 | 2014 | People’s Republic of China | 47 | 30 | 30 | ELISA | Serum |
| Zhi et al36 | 2014 | People’s Republic of China | 40 | 60 | 30 | ELISA | Serum |
| Paek et al34 | 2015 | Republic of Korea | 74 | Not mentioned | Not mentioned | Immunohistochemistry | Tissue |
Abbreviation: ELISA, enzyme-linked immunosorbent assay.