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Multi-level Modelling Under Informative Sampling

Pfeffermann, Danny, Moura, Fernando and Silva, Pedro Nascimento (2004) Multi-level Modelling Under Informative Sampling , Southampton, UK Southampton Statistical Sciences Research Institute 29pp. (S3RI Methodology Working Papers, M04/09).

Record type: Monograph (Project Report)


We consider a model dependent approach for multi-level modelling that accounts for informative probability sampling, and compare it with the use of probability weighting as proposed by Pfeffermann et al. (1998a). The new modelling approach consists of first extracting the hierarchical model holding for the sample data as a function of the corresponding population model and the first and higher level sample selection probabilities, and then fitting the resulting sample model using Bayesian methods. An important implication of the use of this approach is that the sample selection probabilities feature in the analysis as additional outcome values that strengthen the estimators. A simulation experiment is carried out in order to study and compare the performance of the two approaches. The simulation study indicates that both approaches perform generally equally well in terms of point estimation, but the model dependent approach yields confidence (credibility) intervals with better coverage properties. A robustness simulation study is performed, which allows to assess the impact of misspecification of the models assumed for the sample selection probabilities under informative sampling schemes.

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Published date: 2004


Local EPrints ID: 8182
PURE UUID: 95c365a7-f4e6-43fc-b274-dc173eed7181

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Date deposited: 11 Jul 2004
Last modified: 17 Jul 2017 17:13

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Author: Fernando Moura
Author: Pedro Nascimento Silva

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