Mortality among 'never smokers"living with smokers: two cohort studies,1981-4 and 1996-9.

Presents a research paper on the mortality of "never smokers" living with smokers. How the patients were chosen for this study; Use of the Poisson regression to make adjustments to standard mortality rates; Finding that the never-smokers had a modest but consistent association with mortality when living with smokers; Limitations of the study.