Smoking Deaths Among Doctors
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 (
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.
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.
Dataset imported from https://www.r-project.org.