[Markov chain analysis of the movement of geriatric pensioners].

The movements of geriatric patients through the eight health zones of Canton Vaud (Switzerland) are analyzed. The procedure for modelling the patients' moves between various states with a Markov chain is detailed and the results presented. Markov chain analysis may constitute a predicting model. Movement prediction may then assist in delineating various health areas. For the time being, the limits of health areas are usually decided upon following conventional administrative patterns without any regard to reality. Markov chain analysis could be of assistance in rationalizing this process.