Search Results - subject:"Cox regression"

Modeling Concentration and Dispersion in Multiple Regression

Aaberge, Rolf; Bjerve, Steinar; Doksum, Kjell - Statistisk Sentralbyrå, Government of Norway - 2005

We consider concepts and models that are useful for measuring how strongly the distribution of a positive response Y is concentrated near a value with a focus on how concentration varies as a function of covariates. We combine ideas from statistics, economics and reliability theory. Lorenz...

Persistent link: https://www.econbiz.de/10004980629

Least squares type estimation for Cox regression model and specification error

Gradowska, P.L.; Cooke, R.M. - In: Computational Statistics & Data Analysis 56 (2012) 7, pp. 2288-2302

A new estimation procedure for the Cox proportional hazards model is introduced. The method proposed employs the sample covariance matrix of model covariates and alternates between estimating the baseline cumulative hazard function and estimating model coefficients. It is shown that the...

Persistent link: https://www.econbiz.de/10010871348

On parametrization, robustness and sensitivity analysis in a marginal structural Cox proportional hazards model for point exposure

Tchetgen Tchetgen, Eric J.; Robins, James - In: Statistics & Probability Letters 82 (2012) 5, pp. 907-915

In this paper, some new statistical methods are proposed, for making inferences about the parameter indexing a Cox proportional hazards marginal structural model for point exposure. Under the key assumption that unmeasured confounding is absent, we propose a new class of closed-form estimators...

Persistent link: https://www.econbiz.de/10011039989

Evaluation strategies for case series: is Cox regression an alternative to the self controlled case series method for terminal events?

Kuhnert, Ronny; Schlaud, Martin; Hecker, Hartmut - In: AStA Advances in Statistical Analysis 96 (2012) 4, pp. 467-492

events gives unbiased point estimators. The key question of this paper is whether the general Cox regression model for time …-dependent covariates may be an alternative to the adjusted SCCS method for terminal events. In contrast to the SCCS method, Cox regression … is included in most software packages (SPSS, SAS, STATA, R, …) and it is easy to use. We can show that Cox regression is …

Persistent link: https://www.econbiz.de/10010998849

Locking-In Effects Due to Early Interventions? An Evaluation of a Multidisciplinary Screening Programs for Avoiding Long-Term Sickness

Johansson, Per; Lindahl, Erica - In: Evaluation Review 36 (2012) 5, pp. 323-345

register information, we estimate different Cox regression models and apply a nonparametric matching estimator. We have also …

Persistent link: https://www.econbiz.de/10010686427

Determinantes de los flujos de exportaciones para las empresas en Costa Rica : un análisis de supervivencia

Umaña Alvarado, Carlos Eduardo - In: Revista de ciencias económicas 30 (2012) 2, pp. 53-75

Persistent link: https://www.econbiz.de/10011474776

An empirical analysis of price setting behaviour in the Netherlands in the period 1998-2003 using micro data

Jonker, Nicole; Folkertsma, Carsten; Blijenberg, Harry - 2004

In this paper we examine pricing behaviour of retail firms in the Netherlands during 1998-2003 using a large database with monthly price quotes of 49 articles, representing different product types. We have conducted this study in order to gain in sight in the degree of nominal rigidity of...

Persistent link: https://www.econbiz.de/10011604459

An empirical analysis of price setting behaviour in the Netherlands in the period 1998-2003 using micro data

Jonker, Nicole; Folkertsma, Carsten; Blijenberg, Harry - European Central Bank - 2004

Persistent link: https://www.econbiz.de/10005530899

An Emprical Analysis of Price Setting Behaviour in the Netherlands in the Period 1998-2003 Using Micro Data

Jonker, Nicole; Folkertsma, Carsten; Blijenberg, Harry - de Nederlandsche Bank - 2004

In this paper we examine pricing behaviour of retail firms in the Netherlands during 1998-2003 using alarge database with monthly price quotes of 49 articles, representing different product types. We have conducted this study in order to gain in sight in the degree of nominal rigidity of...

Persistent link: https://www.econbiz.de/10005106661

Mixed Discrete and Continuous Cox Regression Model

Prentice, Ross L.; Kalbfleisch, John D. - 2003

The Cox (1972) regression model is extended to include discrete and mixed continuous/discrete failure time data by retaining the multiplicative hazard rate form of the absolutely continuous model. Application of martingale arguments to the regression parameter estimating function show the...

Persistent link: https://www.econbiz.de/10009477091