Table 3– Environmental tobacco-smoke exposure, residential radon and risk of lung cancer
Radon# Bq·m−3Living with smokers in the same dwelling years
01–35≥36
TotalCasesControlsOR (95% CI)TotalCasesControlsOR (95% CI)TotalCasesControlsOR (95% CI)
<200174641101+7521540.57 (0.31–1.06)368280.44 (0.19–1.03)
≥2008444401.99 (1.16–3.41)5333202.75 (1.44–5.25)277200.63 (0.25–1.56)
  • Data are presented as n unless otherwise stated. #: residential exposure : odds ratio adjusted for sex and age; +: no confidence interval as reference category.