[A discussion around Cohen's ecological research on the relationship between the radon content in dwellings and lung cancer mortality].

B. L. Cohen showed that lung cancer lethality in U.S. sharply contradicts linear no-threshold (LNT) dependence on lung dose. This conclusion undermines established theory and practice for estimation of the irradiation remote risk; therefore, an unusual discussion has risen. Cohen's opponents (LNT adherents) said that he substituted the mean risk in a county for the individual risk that resulted in inadmissible bias of results. However, his critics' conclusions contradict many results found by Cohen and investigations by other authors.