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Modelo logístico generalizado dependente do tempo com fragilidade
(Universidade Federal de São Carlos, 2011-02-11)
Several authors have preferred to model survival data in the presence of covariates through the hazard function, a fact related to its interpretation. The hazard function describes as the instantaneous average of failure ...
Modelos de sobrevivência com fração de cura usando um termo de fragilidade e tempo de vida Weibull modificada generalizada
(Universidade Federal de São Carlos, 2011-02-24)
In survival analysis, some studies are characterized by having a significant fraction of units that will never suffer the event of interest, even if accompanied by a long period of time. For the analysis of long-term data, ...
Modelo de mistura padrão com tempos de vida exponenciais ponderados
(Universidade Federal de São Carlos, 2010-03-05)
In this work, we brie_y introduce the concepts of long-term survival analysis. We dedicated ourselves exclusively to the standard mixture cure model from Boag (1949) and Berkson & Gage (1952), showing its deduction and ...
Distribuição COM-Poisson na análise de dados de experimentos de quimioprevenção do câncer em animais
(Universidade Federal de São Carlos, 2012-03-16)
Experiments involving chemical induction of carcinogens in animals are common in the biological area. Interest in these experiments is, in general, evaluating the chemopreventive effect of a substance in the destruction ...
Modelo de mistura paramétrico com fragilidade na presença de covariáveis
(Universidade Federal de São Carlos, 2013-04-23)
Some studies involving survival data are characterized by showing a significant proportion of censored data, that is, individuals who will never experience the event of interest, even if accompanied by a long period of ...
Modelos de sobrevivência com base nas distribuições geométrica e exponencial
(Universidade Federal de São Carlos, 2013-02-01)
In this dissertation we propose four models to model lifetime data. The fist family of distribution is called Exponentiated Complementary Exponential Geometric distribution (ECEG) and it is obtained by exponentiation of ...
Extensões dos modelos de sobrevivência referente a distribuição Weibull
(Universidade Federal de São Carlos, 2014-03-07)
In this dissertation, two models of probability distributions for the lifetimes until the occurrence of the event produced by a specific cause for elements in a population are reviewed. The first revised model is called ...