We propose a new class of survival models for time-to-event data with a cure fraction. This new model is an extension of the promotion time cure rate model. Furthermore, we extend the model to the regression model to ...

Transcriptome analysis is essential to understand the mechanisms regulating key biological processes and functions. The first step usually consists of identifying candidate genes; to find out which pathways are affected ...

Background: High impulsivity is trans-diagnostically associated with several addiction-related disorders including pathological gambling, substance dependence and personality disorders. Here we applied latent class analysis ...

The objective of the present work was to evaluate the effect of somatic cell score on the longevity of Holstein cows raised all over Brazil, using a piecewise Weibull proportional-hazard model. The following two longevity ...

We derive asymptotic expansions for the nonnull distribution functions of the likelihood ratio, Wald, score and gradient test statistics in the class of dispersion models, under a sequence of Pitman alternatives. The ...

Background: Well-planned orthognathic surgery improves psychological health, aesthetics and function of patients. Aim: The present study aimed to investigate patients’ satisfaction after orthognathic surgery by means of a ...

In this paper we obtain asymptotic expansions, up to order n(-1/2) and under a sequence of Pitman alternatives, for the nonnull distribution functions of the likelihood ratio, Wald, score and gradient test statistics in ...

A influência de sintomas depressivos e de alterações cognitivas e da capacidade funcional na qualidade de vida de pacientes com insuficiência cardíaca não está bem esclarecida. O objetivo deste estudo foi avaliar a frequência ...

Regression models for binary response variables are very common in several areas of knowledge. The most used model in these situations is the logistic regression model, which assumes that the logit of the probability of ...