1. Components of a difference between two rates.;Kitagawa;J Am Stat Assoc,1955
2. Smoking and lung cancer: recent evidence and a discussion of some questions.;Cornfield;J Natl Cancer Inst,1959
3. Spurious effects from an extraneous variable.;Bross;J Chronic Dis,1966
4. Assessing effects of confounding variables.;Schlesselman;Am J Epidemiol,1978
5. Assessing sensitivity to an unobserved binary covariate in an observational study with binary outcome.;Rosenbaum;J R Stat Soc Series B,1983