msm (version 0.1)

aneur: Aortic aneurysm progression data

Description

This dataset contains a list of transitions between grades of aortic aneurysms,

Usage

data(aneur)

format

A data frame containing 2662 rows. Columns correspond to 'starting state', 'end state', 'time interval', 'age at beginning of interval'.

source

The Chichester, U.K. randomised controlled trial of screening for abdominal aortic aneurysms by ultrasonography.

References

Couto, E. and Duffy, S. W. and Ashton, H. A. and Walker, N. M. and Myles, J. P. and Scott, R. A. P. and Thompson, S. G. (2002) Probabilities of progression of aortic aneurysms: estimates and implications for screening policy Journal of Medical Screening, in press.