• Efficiency in the design of clinical trials with ordinal scales 

    Torres, Juan Vicente; Cortés, Jordi; González, Jose Antonio; Muñoz Gracia, María del Pilar; Sánchez, Josep Anton; Secades, Julio; Cobo Valeri, Erik (2009-09)
    Comunicació de congrés
    Accés restringit per acord de confidencialitat
    The most popular statistical methods for analyzing ordinal data are reviewed in this work. Theoretical results are compared to empirical results by means of simulations. It is shown how the efficiency of the trial can be ...