A Generalized Log-gamma Mixture Model For Cure Rate: Estimation And Sensitivity Analysis

dc.creatorOrtega E.M.M.
dc.creatorCancho V.G.
dc.creatorLachos V.H.
dc.date2009
dc.date2015-06-26T13:37:19Z
dc.date2015-11-26T15:38:04Z
dc.date2015-06-26T13:37:19Z
dc.date2015-11-26T15:38:04Z
dc.date.accessioned2018-03-28T22:46:31Z
dc.date.available2018-03-28T22:46:31Z
dc.identifier
dc.identifierSankhya: The Indian Journal Of Statistics. , v. 71, n. 1 SERIES B, p. 1 - 29, 2009.
dc.identifier9727671
dc.identifier
dc.identifierhttp://www.scopus.com/inward/record.url?eid=2-s2.0-76949105530&partnerID=40&md5=bf1adb7a7d0d47dfaa97c6ffeea75ac9
dc.identifierhttp://www.repositorio.unicamp.br/handle/REPOSIP/92739
dc.identifierhttp://repositorio.unicamp.br/jspui/handle/REPOSIP/92739
dc.identifier2-s2.0-76949105530
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/1263802
dc.descriptionIn a sample of censored survival times, the presence of an immune proportion of individuals who are not subject to death, failure or relapse may be indicated by a relatively high number of individuals with large censored survival times. In this paper, the generalized log-gamma model is modifed for the possible presence of long-term survivors in the data. The models attempt to simultaneously estimate the effects of covariates on the acceleration/deceleration of the timing of a given event and the surviving fraction, that is, the proportion of the population for which the event never occurs. The logistic function is used for the regression model of the surviving fraction. The generalized log-gamma mixture model is exible enough to include many commonly used failure time distributions as special cases. We consider maximum likelihood and Jackknife estimators for the parameters of the model. We derive the numerically matrices for assessing local Influence on the parameter estimates under di erent perturbation schemes and we also present some ways to perform global Influence. Finally, a data set from the medical area is analyzed under the log-gamma generalized mixture model. © 2009, Indian Statistical Institute.
dc.description71
dc.description1 SERIES B
dc.description1
dc.description29
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dc.languageen
dc.publisher
dc.relationSankhya: The Indian Journal of Statistics
dc.rightsfechado
dc.sourceScopus
dc.titleA Generalized Log-gamma Mixture Model For Cure Rate: Estimation And Sensitivity Analysis
dc.typeArtículos de revistas


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