Table 3

Summary of lung cancer risk estimates by smoking status and treatment group

Smoking statusaNumber of cases selenium/placebobHRc (95% CI)
Current16/250.67 (0.36, 1.26)
Former7/100.70 (0.26, 1.81)
  • a Smoking status defined at baseline. Never-smokers represented only 2 cases of lung cancer.

  • b Two lung cancer cases in never-smokers from the selenium group were excluded from this analysis.

  • c Adjusted for age and baseline plasma selenium as continuous variables.