Please use this identifier to cite or link to this item: https://hdl.handle.net/10419/21863 
Year of Publication: 
2006
Series/Report no.: 
IAW Diskussionspapiere No. 25
Publisher: 
Institut für Angewandte Wirtschaftsforschung (IAW), Tübingen
Abstract: 
The demand of scientists for confidential micro data from official sources has created discussion of how to anonymize these data in such a way that they can be given to the scientific community. We report results from a German project which exploits various options of anonymization for producing such ?scientific-use- files?. The main concern in the project however is whether estimation of stochastic models from these perturbed data is possible and – more importantly – leads to reliable results. In this paper we concentrate on estimation of the probit model under the assumption that only anonymized data are available. In particular we assume that the binary dependent variable has undergone post-randomization (PRAM) and that the set of explanatory variables has been perturbed by addition of noise. We employ a maximum likelihood estimator which is consistent if only the dependent variable has been anonymized by PRAM. The errors-in-variables structure of the regressors then is handled by the simulation extrapolation (SIMEX) estimation procedure where we compare performance of quadratic and nonlinear (rational) extrapolation.
Subjects: 
anonymization
misclassification
noise addition
post-randomization
SIMEX procedure
statistical disclosure
Document Type: 
Working Paper

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