Results 21 to 30 of about 18,981 (120)

A practical simulation method to calculate sample size of group sequential trials for time-to-event data under exponential and Weibull distribution. [PDF]

PLoS ONE, 2012
Group sequential design has been widely applied in clinical trials in the past few decades. The sample size estimation is a vital concern of sponsors and investigators.
Zhiwei Jiang, Ling Wang, Chanjuan Li, Jielai Xia, Hongxia Jia   +4 more
doaj   +1 more source

Multivariate Threshold Regression Models with Cure Rates: Identification and Estimation in the Presence of the Esscher Property

Stats, 2022
The first hitting time of a boundary or threshold by the sample path of a stochastic process is the central concept of threshold regression models for survival data analysis.
Mei-Ling Ting Lee, George A. Whitmore
doaj   +1 more source

Nonparametric Transformation Models for Double-Censored Data with Crossed Survival Curves: A Bayesian Approach

Mathematics
Double-censored data are frequently encountered in pharmacological and epidemiological studies, where the failure time can only be observed within a certain range and is otherwise either left- or right-censored.
Ping Xu, Ruichen Ni, Shouzheng Chen, Zhihua Ma, Chong Zhong   +4 more
doaj   +1 more source

Cox Proportional Hazards Regression for Interval-Censored Data with an Application to College Entrance and Parental Job Loss

Economies, 2022
This study involved conducting a survival analysis by fitting a Cox proportional hazards model to Korea Labor Panel data to analyze the impact of parental job loss on children’s delayed admission to colleges and universities in South Korea, using 376 ...
HeeJin Kim, Sunghun Kim, Eunjee Lee
doaj   +1 more source

Estimation for Akshaya Failure Model with Competing Risks under Progressive Censoring Scheme with Analyzing of Thymic Lymphoma of Mice Application

Complexity, 2022
In several experiments of survival analysis, the cause of death or failure of any subject may be characterized by more than one cause. Since the cause of failure may be dependent or independent, in this work, we discuss the competing risk lifetime model ...
Tahani A. Abushal, Jitendra Kumar, Abdisalam Hassan Muse, Ahlam H. Tolba   +3 more
doaj   +1 more source

Additive-multiplicative hazards regression models for interval-censored semi-competing risks data with missing intermediate events

BMC Medical Research Methodology, 2019
Background In clinical trials and survival analysis, participants may be excluded from the study due to withdrawal, which is often referred to as lost-to-follow-up (LTF). It is natural to argue that a disease would be censored due to death; however, when
Jinheum Kim, Jayoun Kim, Seong W. Kim
doaj   +1 more source

Bayesian and non-Bayesian estimation of dynamic cumulative residual Tsallis entropy for moment exponential distribution under progressive censored type II

Open Physics, 2023
The dynamic cumulative residual (DCR) entropy is a helpful randomness metric that may be used in survival analysis. A challenging issue in statistics and machine learning is the estimation of entropy measures.
Alyami Salem A., Hassan Amal S., Elbatal Ibrahim, Elgarhy Mohammed, El-Saeed Ahmed R.   +4 more
doaj   +1 more source

mexhaz: An R Package for Fitting Flexible Hazard-Based Regression Models for Overall and Excess Mortality with a Random Effect

Journal of Statistical Software, 2021
We present mexhaz, an R package for fitting flexible hazard-based regression models with the possibility to add time-dependent effects of covariates and to account for a twolevel hierarchical structure in the data through the inclusion of a normally ...
Hadrien Charvat, Aurélien Belot
doaj   +1 more source

Semiparametric Analysis of Additive–Multiplicative Hazards Model with Interval-Censored Data and Panel Count Data

Mathematics
In survival analysis, interval-censored data and panel count data represent two prevalent types of incomplete data. Given that, within certain research contexts, the events of interest may simultaneously involve both data types, it is imperative to ...
Tong Wang, Yang Li, Jianguo Sun, Shuying Wang   +3 more
doaj   +1 more source

Inference for Two-Parameter Birnbaum–Saunders Distribution Based on Type-II Censored Data with Application to the Fatigue Life of Aluminum Coupon Cuts

Mathematics
This study addresses the problem of parameter estimation and prediction for type-II censored data from the two-parameter Birnbaum–Saunders (BS) distribution.
Omar M. Bdair
doaj   +1 more source