Estimation of the Modified Weibull Additive Hazards Regression Model under Competing Risks
نویسندگان
چکیده
The additive hazard regression model plays an important role when the excess risk is quantity of interest compared to relative risks, where proportional better. This paper discusses parametric analysis survival data using hazards with competing risks in presence independent right censoring. In this paper, baseline function parameterized a modified Weibull distribution as lifetime model. parameters are estimated maximum likelihood and Bayesian estimation methods. We also derive asymptotic confidence interval Bayes credible unknown parameters. finite sample behaviour proposed estimators investigated through Monte Carlo simulation study. applied liver transplant data.
منابع مشابه
Analysis of Competing Risks Data with Missing Cause of Failure under Additive Hazards Model
Competing risks data arise when study subjects may experience several different types of failure. It is common that the cause of failure is missing due to various reasons. Analysis of competing risks data with missing cause of failure has received considerable attention recently (Goetghebeur and Ryan (1995), Lu and Tsiatis (2001), Gao and Tsiatis (2005), among others). In this article, we study...
متن کاملParametric Estimation in a Recurrent Competing Risks Model
A resource-efficient approach to making inferences about the distributional properties of the failure times in a competing risks setting is presented. Efficiency is gained by observing recurrences of the compet- ing risks over a random monitoring period. The resulting model is called the recurrent competing risks model (RCRM) and is coupled with two repair strategies whenever the system fails. ...
متن کاملEstimation in a competing risks proportional hazards model under length-biased sampling with censoring.
What population does the sample represent? The answer to this question is of crucial importance when estimating a survivor function in duration studies. As is well-known, in a stationary population, survival data obtained from a cross-sectional sample taken from the population at time t(0) represents not the target density f (t) but its length-biased version proportional to t f (t), for t > 0. ...
متن کاملEstimation of Weibull Parameters for Grouped Data with Competing Risks
When experimental units, on a cross-sectional or a longitudinal study, are followed up periodically, the event(s) of interest may only be known to have occurred between two dates of follow-up. In this case data are usually presented in form of counts of events in each of the follow-up intervals (grouped data). Furthermore, in studies of survival, subjects may be at risk of failure due to more t...
متن کاملStatistical Inference of a Competing Risks Model with Modified Weibull Distributions
Abstract Statistical inferences of the parameters included in a competing risks model are presented. It is assumed here that the causes of failures may occur at times that follow modified Weibull distributions. The case of Weibull distributions can be derived as special case of the problem studied in this paper. The maximum likelihood procedure is used to get the point estimations and asymptoti...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Symmetry
سال: 2023
ISSN: ['0865-4824', '2226-1877']
DOI: https://doi.org/10.3390/sym15020485