breslow: Smoking Deaths Among Doctors

Description Usage Format Source References


The breslow data frame has 10 rows and 5 columns.

In 1961 Doll and Hill sent out a questionnaire to all men on the British Medical Register enquiring about their smoking habits. Almost 70% of such men replied. Death certificates were obtained for medical practitioners and causes of death were assigned on the basis of these certificates. The breslow data set contains the person-years of observations and deaths from coronary artery disease accumulated during the first ten years of the study.




This data frame contains the following columns:


The mid-point of the 10 year age-group for the doctors.


An indicator of whether the doctors smoked (1) or not (0).


The number of person-years in the category.


The number of deaths attributed to coronary artery disease.


The number of smoker years in the category (smoke*n).


The data were obtained from

Breslow, N.E. (1985) Cohort Analysis in Epidemiology. In A Celebration of Statistics A.C. Atkinson and S.E. Fienberg (editors), 109–143. Springer-Verlag.


Davison, A.C. and Hinkley, D.V. (1997) Bootstrap Methods and Their Application. Cambridge University Press.

Doll, R. and Hill, A.B. (1966) Mortality of British doctors in relation to smoking: Observations on coronary thrombosis. National Cancer Institute Monograph, 19, 205-268.

boot documentation built on May 3, 2021, 5:09 p.m.

Related to breslow in boot...