Table 5: Characteristics of studies of HBV infection and ECC risk.

AuthorsYearCountryCases ()Controls ()Control descriptionAdjusted OR (95% CI)Study qualityReference

Lee et al.2015Korea193386Hospital-based controlNR7[32]
Chang et al.2013China (Taiwan)21798716Population-based control2.6 (2.0–3.4)9[35]
Zhou et al.2013China239478Hospital-based controlNR7[15]
Wu et al.2012China86835Hospital-based controlNR7[47]
Tao et al.2010China129380Hospital-based controlNR8[40]
Hsing et al.2008China134762Population-based controlNR8[43]

NR: not reported.