Diversite de la qualite de recueil des donnees dans un registre : proposition d'une demarche d'analyse et application au registre REIN

Missing data may lead to bias and loss of information in epidemiological research. In this article, we propose an approach to analyze missing data on comorbidity variables in a register with consideration of the territorialized organization of the collection. To illustrate this approach, we used the national REIN registry as an application case.