| HCC | hepatocellular carcinoma |
| OR | odds ratios |
| CI | confidence intervals |
| HBV | hepatitis B virus |
| HBsAg | hepatitis B virus surface antigen |
| HBeAg | hepatitis B e antigen |
| CNKI | National Knowledge Infrastructure |
| VIP | VIP database |
| Wanfang | Wanfang data |
| M | model |
| F | fixed-effect model |
| R | random-effect model |
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