Results 31 to 40 of about 628,696 (290)

Semiparametric Multivariate Accelerated Failure Time Model with Generalized Estimating Equations

, 2012
The semiparametric accelerated failure time model is not as widely used as the Cox relative risk model mainly due to computational difficulties. Recent developments in least squares estimation and induced smoothing estimating equations provide promising ...
A Komárek, A Qu, AA Tsiatis, BM Brown, BM Brown, CF Spiekerman, D Zeng, DR Cox, EA Gehan, EW Lee, H Li, J Buckley, J Yan, JM Robins, Jun Yan, Junghi Kim, K-Y Liang, K-Y Liang, L Yu, L Yu, LM Johnson, M Zhou, M-C Wang, P Novák, RL Prentice, RL Strawderman, Sangwook Kang, Sy Han Chiou, TL Lai, U Halekoh, W Stute, W Stute, WJ Huster, X Luo, Y Huang, Y Ritov, Y-G Wang, Z Jin, Z Jin, Z Jin, Z Ying   +40 more
core   +1 more source

Interval-Censored Regression with Non-Proportional Hazards with Applications

Stats, 2023
Proportional hazards models and, in some situations, accelerated failure time models, are not suitable for analyzing data when the failure ratio between two individuals is not constant. We present a Weibull accelerated failure time model with covariables
Fábio Prataviera, Elizabeth M. Hashimoto, Edwin M. M. Ortega, Taciana V. Savian, Gauss M. Cordeiro   +4 more
doaj   +1 more source

Research on time-frequency characteristics of acoustic-electric signals in process of rock failure under load

Gong-kuang zidonghua, 2020
The analysis of time-domain characteristics of acoustic emission (AE) and electromagnetic radiation (EMR) signals in process of rock failure under load mostly draws qualitative conclusions from amplitude, ringing count, energy and other parameters ...
LIU Yang, QIU Liming, LOU Quan, WEI Menghan, YIN Shan, LI Pengpeng, CHENG Xiaohe   +6 more
doaj   +1 more source

Bayesian and frequentist approach for the generalized log-logistic accelerated failure time model with applications to larynx-cancer patients

Alexandria Engineering Journal, 2022
The log-normal, log-logistic and Weibull distributions are commonly utilized to model survival data. Unimodal (or non-monotone) failure rate functions are modeled using the log-normal and the log-logistic families, whereas monotone failure rate functions
Abdisalam Hassan Muse, Samuel Mwalili, Oscar Ngesa, Huda M. Alshanbari, Saima Khan Khosa, Eslam Hussam   +5 more
doaj   +1 more source

Accelerated failure time models for censored survival data under referral bias [PDF]

, 2012
The estimation of progression to liver cirrhosis and identifying its risk factors are often of epidemiological interest in hepatitis C natural history study.
B. Fu, BUCKLEY, BURKE, CAMPBELL, Chen, CLAYTON, Dore, Freeman, H. Dai, H. Wang, Jin, MILLER, MILLER   +12 more
core   +1 more source

Modeling of waiting time to first employment of graduates at wolkite university, Ethiopia: Application of accelerated failure time models

Cogent Education, 2022
In Sub-Saharan African countries like Ethiopia, the waiting time for graduates before having their first job is very high. This study aimed at predicting the waiting time to get their first job and the effects of the associated factors.
Belete Adelo Wobse, Yohannes Haile Menuta, Abebe Debu Liga   +2 more
doaj   +1 more source

Accelerated Failure Time Models with Logconcave Errors

SSRN Electronic Journal, 2019
Summary We study accelerated failure time models in which the survivor function of the additive error term is log-concave. The log-concavity assumption covers large families of commonly used distributions and also represents the aging or wear-out phenomenon of the baseline duration.
Ruixuan Liu, Zhengfei Yu
openaire   +1 more source

The Extended Exponential-Weibull Accelerated Failure Time Model with Application to Sudan COVID-19 Data

Mathematics, 2023
A fully parametric accelerated failure time (AFT) model with a flexible, novel modified exponential Weibull baseline distribution called the extended exponential Weibull accelerated failure time (ExEW-AFT) model is proposed.
Adam Braima S. Mastor, Abdulaziz S. Alghamdi, Oscar Ngesa, Joseph Mung’atu, Christophe Chesneau, Ahmed Z. Afify   +5 more
doaj   +1 more source

Bayesian Accelerated Failure Time modelling of maternal mortality during pregnancy

Critical Public Health
Maternal mortality remains a critical global health issue, particularly in resource-constrained regions. This study introduces a novel Bayesian Accelerated Failure Time (AFT) model incorporating the Alpha Power Transformed Generalized Weibull (APTGW ...
Merga Abdissa Aga, Ayele Taye Goshu
doaj   +1 more source

Comparison of reliability techniques of parametric and non-parametric method

Engineering Science and Technology, an International Journal, 2016
Reliability of a product or system is the probability that the product performs adequately its intended function for the stated period of time under stated operating conditions. It is function of time.
C. Kalaiselvan, L. Bhaskara Rao
doaj   +1 more source