© 1988 by Institute of Mathematics and its Applications
A Homogeneity Test for Follow-up Studies
1Division of Biostatistics, Columbia University School of Public Health 600W 168St., New York City, New York 10032, USA
2Department of Statistics, Columbia University New York City, New York 10027, USA
3Division of Biostatistics, Columbia University School of Public Health 600W/68St., New York City, New York 10032, USA
A statistical method is presented for detecting random variation in the transition probabilities of certain simple, discrete-time Markov chains that have been found useful for modelling follow-up studies.