coalminers {VGAM} | R Documentation |
Coalminers who are smokers without radiological pneumoconiosis, classified by age, breathlessness and wheeze.
data(coalminers)
A data frame with 9 age groups with the following 5 columns.
The data were published in Ashford and Sowden (1970). A more recent analysis is McCullagh and Nelder (1989, Section 6.6).
Ashford, J. R. and Sowden, R. R. (1970) Multi-variate probit analysis. Biometrics, 26, 535–546.
McCullagh, P. and Nelder, J. A. (1989) Generalized Linear Models. 2nd ed. London: Chapman & Hall.
data(coalminers) str(coalminers)