Table 4.

Crude and adjusted risk estimates and 95% CIs for smoking among HBV- and HCV-negative populations

StudyCrude OR/RR (95% CI)Adjusted OR/RR (95% CI)
Wang, 2009 (27)0.3 (0.1-1.4)
Chen, 2008 (26)3.33 (1.93-5.76)
Yuan, 2004 (25)1.88 (1.15-3.07)1.7 (1.0-3.0)
Pooled1.86 (0.98-3.56)0.98 (0.45-2.12)
Pheterogeneity0.0170.049

NOTE: Wang, 2009 (27) adjusted for age, sex, drinking, body mass index, and diabetes before the study. Yuan, 2004 (25) adjusted for age, sex, race, education, drinking, and diabetes.

Abbreviation: OR, odds ratio.