• 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 ...
    • ET study (enhancing transparency of biomedical journals) 

      Vilardell, Miquel; Cobo Valeri, Erik; Urrutia, Agustí; Selva-O'Callagham, Albert; Cardellach López, Francesc; Ribera, Josep Maria; Cortés, Jordi; Miras, Francesc; Rey-Joly, Celestino (2010)
      Comunicació de congrés
      Accés restringit per política de l'editorial