نتایج جستجو برای: censoring

تعداد نتایج: 4582  

Journal: :Annual Review of Public Health 1997

Journal: :Feminist dissent 2022

Do I or do not have the right to tell my story?
 This is question asked at 2020 talk on Creativity in Protesting Islamic Fundamentalism TedX Warwick’s within Crisis event. Ironically, censorship of ex-Muslims was itself censored by TedX, first its refusal publish due ‘political content’ and then publishing after public pressure but without any slides – addition a trigger warning: ‘Some vie...

Journal: :Biometrics 2010
Lajmi Lakhal-Chaieb Richard J Cook Xihong Lin

In life history studies, interest often lies in the analysis of the interevent, or gap times and the association between event times. Gap time analyses are challenging however, even when the length of follow-up is determined independently of the event process, because associations between gap times induce dependent censoring for second and subsequent gap times. This article discusses nonparamet...

Journal: :Statistical methods in medical research 2015
Samo Wakounig Georg Heinze Michael Schemper

We extend the Tarone and Ware scheme of weighted log-rank tests to cover the associated weighted Mantel-Haenszel estimators of relative risk. Weighting functions previously employed are critically reviewed. The notion of an average hazard ratio is defined and its connection to the effect size measure P(Y > X) is emphasized. The connection makes estimation of P(Y > X) possible also under censori...

2014
Getachew A. Dagne Yangxin Huang

Complex longitudinal data are commonly analyzed using nonlinearmixed-effects NLME models with a normal distribution. However, a departure fromnormalitymay lead to invalid inference and unreasonable parameter estimates. Some covariates may be measured with substantial errors, and the response observations may also be subjected to left-censoring due to a detection limit. Inferential procedures ca...

2015
Måns Thulin

In order to make statistical inference, that is drawing conclusions from a sample to describe a population, it is crucial to know the correct distribution of the data. This paper focused on censored data from the normal distribution. The purpose of this paper was to answer whether we can test if data comes from a censored normal distribution. This by using normality tests and tests designed for...

Journal: :Entropy 2015
Youngseuk Cho Hokeun Sun Kyeongjun Lee

Recently, progressive hybrid censoring schemes have become quite popular in a life-testing problem and reliability analysis. However, the limitation of the progressive hybrid censoring scheme is that it cannot be applied when few failures occur before time T . Therefore, a generalized progressive hybrid censoring scheme was introduced. In this paper, the estimation of the entropy of a two-param...

2012
LIRAN EINAV MARK JENKINS JONATHAN LEVIN

HERE WE PRESENT the likelihood function used to estimate the parameters of the demand model. The model can be thought of as a system of four “standard” equations: (i) a tobit down payment equation (with censoring at the minimum down), (ii) a probit purchase equation, (iii) a tobit repayment equation (with censoring at full payment or at the end of our sample), and (iv) a linear price negotiatio...

2007
Sundarraman Subramanian Derek Bean

The kernel smoothed Nelson–Aalen estimator has been well investigated, but is unsuitable when some of the censoring indicators are missing. A representation introduced by Dikta, however, facilitates hazard estimation when there are missing censoring indicators. In this article, we investigate (i) a kernel smoothed semiparametric hazard estimator and (ii) a kernel smoothed “pre-smoothed” Nelson ...

2004
BY WEIJING WANG MARTIN T. WELLS

New bivariate survival function estimators are proposed in the case where the dependence relationship between the censoring variables are modelled. Specific examples include the cases when censoring variables are univariate, mutually independent or specified by a marginal model. Large sample properties of the proposed estimators are discussed. The finite sample performance of the proposed estim...

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