• Heavy right censoring: when is too heavy? 

    López-Segovia, Lucas; Gómez Melis, Guadalupe; Espinal Berenguer, Anna (2009)
    Text en actes de congrés
    Accés restringit per política de l'editorial
    The main purpose of this work is to study the effect that a large percentage of right censoring has on the estimation of the regression parameters under a proportional hazards model. To accomplish this we conduct a simulation ...
  • Nonlinear transformation models: application to mortality of calves 

    López-Segovia, Lucas; Espinal Berenguer, Anna; Gómez Melis, Guadalupe (2010)
    Text en actes de congrés
    Accés obert
    We present. an appl ication of the proportional hazard-proportional hazard cure models to evalu ate the environmental and genetic factors that affect both mortality and survival up to weaning of beef calves. We usc the ...