Letter commentary on: Lung cancer mortality in the French cohort of titanium dioxide workers: some aetiological insights

Dear Editor, Guseva Canu et al 1 examined exposure–response in 833 workers from one of two French plants included a European cohort over 14?000 male TiO2 workers.2 Dose–response was reported solely for the pooled by Boffetta ,2 but investigated this small group (see table 1).3 View table: Table Relative risk (RR) (95% CI) mortality lung cancer estimated cumulative exposure to respirable dust No adjustment smoking made original analyses, little reliance can be placed on multiple imputation results here. An implausible 43 (8.4%) 512 with known status were stated current smokers. Given that only ascertained 33 at second plant,3 is clearly inconsistent …