A general dynamical statistical model with causal interpretation
COMMENGES, Daniel
Institut de Santé Publique, d'Epidémiologie et de Développement [ISPED]
Biostatistique
Institut de Santé Publique, d'Epidémiologie et de Développement [ISPED]
Biostatistique
GEGOUT-PETIT, Anne
Institut de Mathématiques de Bordeaux [IMB]
Quality control and dynamic reliability [CQFD]
Institut de Mathématiques de Bordeaux [IMB]
Quality control and dynamic reliability [CQFD]
COMMENGES, Daniel
Institut de Santé Publique, d'Epidémiologie et de Développement [ISPED]
Biostatistique
Institut de Santé Publique, d'Epidémiologie et de Développement [ISPED]
Biostatistique
GEGOUT-PETIT, Anne
Institut de Mathématiques de Bordeaux [IMB]
Quality control and dynamic reliability [CQFD]
< Reduce
Institut de Mathématiques de Bordeaux [IMB]
Quality control and dynamic reliability [CQFD]
Language
en
Article de revue
This item was published in
Journal of the Royal Statistical Society: Series B. 2009, vol. 71, p. 1-18
Royal Statistical Society
English Abstract
We develop a general dynamical model as a framework for possible causal interpretation. We first state a criterion of local independence in terms of measurability of processes involved in the Doob-Meyer decomposition of ...Read more >
We develop a general dynamical model as a framework for possible causal interpretation. We first state a criterion of local independence in terms of measurability of processes involved in the Doob-Meyer decomposition of stochastic processes, as in Aalen (1987); then we define direct and indirect influence. We propose a definition of causal influence using the concepts of ``physical system''. This framework makes it possible to link descriptive and explicative statistical models, and encompasses quantitative processes and events. One of the features of this paper is the clear distinction between the model for the system and the model for the observation. We give a dynamical representation of a conventional joint model for HIV load and CD4 counts. We show its inadequacy to capture causal influences while on the contrary known mechanisms of HIV infection can be expressed directly through a system of differential equations.Read less <
Origin
Hal imported