Results 11 to 20 of about 628,696 (290)

Flexible boosting of accelerated failure time models [PDF]

open access: yesBMC Bioinformatics, 2008
Background When boosting algorithms are used for building survival models from high-dimensional data, it is common to fit a Cox proportional hazards model or to use least squares techniques for fitting semiparametric accelerated failure time models ...
Hothorn Torsten, Schmid Matthias
doaj   +4 more sources

Nonparametric identification of accelerated failure time competing risks models [PDF]

open access: yesEconometric Theory, 2010
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 joint survivor function of latent disturbance terms are
Arthur Lewbel, Sokbae 'Simon' Lee
core   +5 more sources

A flexible parametric accelerated failure time model and the extension to time-dependent acceleration factors. [PDF]

open access: yesBiostatistics, 2023
Summary Accelerated failure time (AFT) models are used widely in medical research, though to a much lesser extent than proportional hazards models. In an AFT model, the effect of covariates act to accelerate or decelerate the time to event of interest, that is, shorten or extend the time to event.
Crowther MJ, Royston P, Clements M.
europepmc   +3 more sources

Re: Spline‐based accelerated failure time model

open access: yesStatistics in Medicine, 2022
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Mark Clements   +3 more
openaire   +3 more sources

Multi-threshold accelerated failure time model [PDF]

open access: yesThe Annals of Statistics, 2018
A two-stage procedure for simultaneously detecting multiple thresholds and achieving model selection in the segmented accelerate failure time (AFT) model is developed in this paper. In the first stage, we formulate the threshold problem as a group model selection problem so that a concave 2-norm group selection method can be applied.
Li, Jialiang, Jin, Baisuo
openaire   +3 more sources

Identification of a competing risks model with unknown transformations of latent failure times [PDF]

open access: yes, 2005
This paper is concerned with identification of a competing risks model with unknown transformations of latent failure times. The model in this paper includes, as special cases, competing risks versions of proportional hazards, mixed proportional ...
Lee, S.
core   +8 more sources

Using the Weibull Accelerated Failure Time Regression Model to Predict Time to Health Events

open access: yesApplied Sciences, 2023
Clinical prediction models are commonly utilized in clinical practice to screen high-risk patients. This enables healthcare professionals to initiate interventions aimed at delaying or preventing adverse medical events.
Enwu Liu, Ryan Yan Liu, Karen Lim
doaj   +1 more source

Indian Perspectives on Graft Materials Used for Repair of Tympanic Membrane [PDF]

open access: yesJournal of Clinical and Diagnostic Research, 2017
Introduction: Repair of Tympanic Membrane (TM) is one of the most common surgeries performed by the otologists. Literature reveals that Indian surgeons have contributed substantially in the research on techniques and graft materials used for the ...
Manu Malhotra   +3 more
doaj   +1 more source

A New Compromise Design Plan for Accelerated Failure Time Models with Temperature as an Acceleration Factor

open access: yesMathematics, 2021
An accelerated life test of a product or material consists of the observation of its failure time when it is subjected to conditions that stress the usual ones.
Irene Mariñas-Collado   +3 more
doaj   +1 more source

Survival analysis of women breast cancer patients in Northwest Amhara, Ethiopia

open access: yesFrontiers in Oncology, 2022
IntroductionBreast cancer, the most common cause of cancer death and the most frequently diagnosed cancer among women worldwide, ranks as the second cause of death next to lung cancer.
Bereket Feleke   +3 more
doaj   +1 more source

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