Re: Lung Cancer Risk Among Female Textile Workers Exposed to Endotoxin

Astrakianakis et al discuss the inadvertent error in the calculations of their lagged exposure estimates in their study titled Reduced Risk of Lung Cancer Among Female Textile Workers Exposed to Endotoxin. For case patients, cumulative exposure estimates were correctly lagged from diagnosis date; however, for noncase subcohort workers, exposures were incorrectly lagged from final follow-up (the earlier of study end on Dec 31, 1998, or date of death). Estimates should have been calculated for subcohort members still at risk of incident lung cancer as of the diagnosis dates for case patients within individual risk sets.