Table 3

Odds ratios of hepatocellular carcinoma for NAT1 and NAT2 genotypes by cigarette smoking status

SmokersNon-smokers
GenotypeCasesControlsOR95% CICasesControlsOR95% CI
No ofNAT2*4
 None11251.0Reference16301.0Reference
 One40342.671.15–6.2236551.230.59–2.57
 Two25222.581.04–6.4323450.960.44–2.11
No ofNAT1*10
 None25201.0Reference24381.0Reference
 One36430.670.32–1.4038650.930.48–1.77
 Two15180.670.27–1.6413270.760.33–1.76
NAT2*4/NAT1*10
 −/−471.0Reference3101.0Reference
 −/+7180.680.15–3.0713202.170.50–9.40
 +/−21132.830.69–11.5821282.500.61–10.23
 +/+44431.790.49–6.5638721.760.46–6.78