Accelerated Failure Time Models
Mostrando 1-5 de 5 artigos, teses e dissertações.
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1. Modelo logístico generalizado dependente do tempo com fragilidade
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 changes over time. In this context, one of the most used models is the Coxs model (1972), in which the basic supposition for its use is tha
Publicado em: 2011
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2. Predição em modelos de tempo de falha acelerado com efeito aleatório para avaliação de riscos de falha em poços petrolíferos
We considered prediction techniques based on models of accelerated failure time with random eects for correlated survival data. Besides the bayesian approach through empirical Bayes estimator, we also discussed about the use of a classical predictor, the Empirical Best Linear Unbiased Predictor (EBLUP). In order to illustrate the use of these predictors, we
Publicado em: 2010
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3. Estimação em modelos de tempo de falha acelerado para dados de sobrevivência correlacionados
Apresentamos neste trabalho dois métodos de estimação para modelos de tempo de falha acelerado com efeito aleatório para tratar de dados de sobrevivência correlacionados. O primeiro método, que está implementado no software SAS, através do procedimento NLMIXED, utiliza a quadratura Gauss-Hermite adaptada para obter a verossimilhança marginalizada. O
Publicado em: 2009
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4. Considerations in the Statistical Analysis of Hemodialysis Patient Survival
The association of hemodialysis dosage with patient survival is controversial. Here, we tested the hypothesis that methods for survival analysis may influence conclusions regarding dialysis dosage and mortality. We analyzed all-cause mortality by proportional hazards and accelerated failure time regression models in a cohort of incident hemodialysis patients
American Society of Nephrology.
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5. Effects of Rapid Detection of Bloodstream Infections on Length of Hospitalization and Hospital Charges
Current automated continuous-monitoring blood culture systems afford more rapid detection of bacteremia and fungemia than is possible with non-instrument-based manual methods. Use of these systems has not been studied objectively with respect to impact on patient outcomes, including hospital charges and length of hospitalization. We conducted a prospective,
American Society for Microbiology.