Accelerated Failure Time (AFT)
Log-skew-normal accelerated failure time models
... In this paper, we have described accelerated failure time models with skew-normal distributed (Azzalini, 1985) random effects and/or error terms. For univariate data, the model is an extension of the ...
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Estimation of accelerated failure time models with random effects
... 3 Accelerated Failure Time Models Although the Cox proportional hazards model has been extensively used in medical research, the assumption of proportional hazard functions is rather strong and may ...
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Comparison of proportional hazards and accelerated failure time models
... (survival time) ...with time-dependent variables [10] can be used for the analysis of survival ...The accelerated failure time (AFT) [10] model is another alternative method for the ...
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On the Accelerated Failure Time Model for Current Status and Interval Censored Data
... Abstract This paper introduces a novel approach to making inference about the regression pa- rameters in the accelerated failure time (AFT) model for current status and interval censored data. The ...
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Generalized F accelerated failure time model for mapping survival trait loci
... As time-to-event, survival traits are broadly de fi ned as the length of time between two ...the accelerated failure time model (AFT) is the natural choice for genetic association of ...
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Specification testing for transformation models with an application to generalized accelerated failure-time models
... generalized accelerated failure-time (GAFT) models, which includes accelerated failure-time (AFT) models, proportional hazard (PH) models, and mixed proportional hazard (MPH) ...
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Prediction of time to reflux using accelerated failure time model of Weibull distribution in children with antenatal hydronephrosis
... the accelerated failure time model describes the failure time affected by the covariates and explains how they accelerate or decelerate the life course of the ...of time to a ...
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The Use of Conditional Probability Integral Transformation Method for Testing Accelerated Failure Time Models
... of accelerated life testing (ALT), specifically for validating the underlying distributional assumption in accelerated failure time (AFT) ...
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Estimation of Growth Modulation Index Using Latent Variable and Accelerated Failure Time Model
... Rank Preserving Structural Failure Time (RPSFT) model and Accelerated Failure Time (AFT) model. Simulations were conducted to compare the perfor- mance of proposed GMI estimates and ...
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Further Increasing Fisher's Information for Parameters of Association in Accelerated Failure Time Models via Double Extreme Ranks
... Keywords: Accelerated Failure Time Model, Hazards Ratio, Double Extreme Ranked Set Sampling, Extreme Ranked Set Sampling, Survival ...the time until a subject experiences the event of the ...
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Application of the Weibull Accelerated Failure Time Model in the Determination of Disease-Free Survival Rate of Patients with Breast Cancer
... the accelerated failure time assumption (AFT) holds then the proportional hazards (PH) assumption also ...over time; the main assumption of an AFT model is that survival time ...
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Performance of Cox Proportional Hazard and Accelerated Failure Time Models in the Analysis of HIV/TB Co-infection Survival Data
... In this study, the Cox model and the Accelerated Failure Time model have been compared using HIV/TB Co- infection data. The result showed that there were 76 patients on treatment. The Cox model was ...
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Application of the Misclassification Simulation Extrapolation (Mc-Simex) Procedure to Log-Logistic Accelerated Failure Time (Aft) Models In Survival Analysis
... of time to event outcomes. Accelerated Failure Time models (AFT) serve as a useful tool in survival analysis to study the time of occurrence of an event and its relation to the ...
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Extent, duration and predictors of exclusive breastfeeding in a longitudinal study: adjusting for missing data using an accelerated failure time model and multiple imputation
... The study estimates the prevalence of EBF, duration and predictors of EBF duration while adjusting for missing data using multiple imputation (MI). Methods: A longitudinal study was conducted on all women giving birth ...
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Rank Inferences for The Accelerated Failure Time Models
... The remainder of this thesis is organized in three main chapters. In chapter 2, we study the estimation problem for the accelerated failure time partially linear model. We discuss the merits and ...
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Nonparametric identification of accelerated failure time competing risks models
... We provide new conditions for identification of accelerated failure time competing risks models. These include Roy models and some auction models. In our set up, unknown regression functions and the ...
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Accelerated Failure Time Model for Correlated Survival Data: Efficient Estimation and Inference.
... BO. Accelerated Failure Time Model for Correlated Survival Data: Efficient Estimation and ...Multivariate failure time data frequently arises in many biomedical studies and sci- entific ...
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A Stochastic EM Algorithm for G-RHO Family Accelerated Failure Time Model With Random Effects
... an accelerated failure time model with random effects for correlated or clustered survival time ...over time, which represent a type of non-proportional hazards, with the special case ...
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Bayesian Joint Modelling of Survival Time and Longitudinal CD4 Cell Counts Using Accelerated Failure Time and Generalized Error Distributions
... two accelerated failure time distributions, Log- normal and loglogistic, for the survival time of HIV/AIDS ...Survival time of a patient is negatively affected by TB ...
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Analysis of accelerated failure time data with dependent censoring using auxiliary variables via nonparametric multiple imputation
... impute failure times for censored ...follow accelerated failure time models and propose to use the Buckley–James estimator as the two working ...with time-independent auxiliary ...
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