Interval estimations for parameters of gompertz model with time-dependent covariate and right censored data

There are numerous parametric models for analyzing survival data such as exponential, Weibull, log-normal and gamma. One of such models is the Gompertz model which is widely used in biology and demography. Most of these models are extended to new forms for accommodating different types of censorin...

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Main Authors:	Kaveh Kiani, Jayanthi Arasan, Habshah Midi
Format:	Article
Language:	English
Published:	Universiti Kebangsaan Malaysia 2012
Online Access:	http://journalarticle.ukm.my/3938/ http://journalarticle.ukm.my/3938/ http://journalarticle.ukm.my/3938/1/13%2520Kaveh%2520kiani.pdf

id	ukm-3938
recordtype	eprints
spelling	ukm-39382016-12-14T06:35:22Z http://journalarticle.ukm.my/3938/ Interval estimations for parameters of gompertz model with time-dependent covariate and right censored data Kaveh Kiani, Jayanthi Arasan, Habshah Midi, There are numerous parametric models for analyzing survival data such as exponential, Weibull, log-normal and gamma. One of such models is the Gompertz model which is widely used in biology and demography. Most of these models are extended to new forms for accommodating different types of censoring mechanisms and different types of covariates. In this paper the performance of the Gompertz model with time-dependent covariate in the presence of right censored data was studied. Moreover, the performance of the model was compared at different censoring proportions (CP) and sample sizes. Also, the model was compared with fixed covariate model. In addition, the effect of fitting a fixed covariate model wrongly to a data with time-dependent covariate was studied. Finally, two confidence interval estimation techniques, Wald and jackknife, were applied to the parameters of this model and the performance of the methods was compared. Universiti Kebangsaan Malaysia 2012-04 Article PeerReviewed application/pdf en http://journalarticle.ukm.my/3938/1/13%2520Kaveh%2520kiani.pdf Kaveh Kiani, and Jayanthi Arasan, and Habshah Midi, (2012) Interval estimations for parameters of gompertz model with time-dependent covariate and right censored data. Sains Malaysiana, 41 (4). pp. 471-480. ISSN 0126-6039 http://www.ukm.my/jsm
repository_type	Digital Repository
institution_category	Local University
institution	Universiti Kebangasaan Malaysia
building	UKM Institutional Repository
collection	Online Access
language	English
description	There are numerous parametric models for analyzing survival data such as exponential, Weibull, log-normal and gamma. One of such models is the Gompertz model which is widely used in biology and demography. Most of these models are extended to new forms for accommodating different types of censoring mechanisms and different types of covariates. In this paper the performance of the Gompertz model with time-dependent covariate in the presence of right censored data was studied. Moreover, the performance of the model was compared at different censoring proportions (CP) and sample sizes. Also, the model was compared with fixed covariate model. In addition, the effect of fitting a fixed covariate model wrongly to a data with time-dependent covariate was studied. Finally, two confidence interval estimation techniques, Wald and jackknife, were applied to the parameters of this model and the performance of the methods was compared.
format	Article
author	Kaveh Kiani, Jayanthi Arasan, Habshah Midi,
spellingShingle	Kaveh Kiani, Jayanthi Arasan, Habshah Midi, Interval estimations for parameters of gompertz model with time-dependent covariate and right censored data
author_facet	Kaveh Kiani, Jayanthi Arasan, Habshah Midi,
author_sort	Kaveh Kiani,
title	Interval estimations for parameters of gompertz model with time-dependent covariate and right censored data
title_short	Interval estimations for parameters of gompertz model with time-dependent covariate and right censored data
title_full	Interval estimations for parameters of gompertz model with time-dependent covariate and right censored data
title_fullStr	Interval estimations for parameters of gompertz model with time-dependent covariate and right censored data
title_full_unstemmed	Interval estimations for parameters of gompertz model with time-dependent covariate and right censored data
title_sort	interval estimations for parameters of gompertz model with time-dependent covariate and right censored data
publisher	Universiti Kebangsaan Malaysia
publishDate	2012
url	http://journalarticle.ukm.my/3938/ http://journalarticle.ukm.my/3938/ http://journalarticle.ukm.my/3938/1/13%2520Kaveh%2520kiani.pdf
first_indexed	2023-09-18T19:40:10Z
last_indexed	2023-09-18T19:40:10Z
_version_	1777405536768098304

Interval estimations for parameters of gompertz model with time-dependent covariate and right censored data

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