The Effect of Microaggregation Procedures on the Estimation of Linear Models: A Simulation Study
Microaggregation is a set of procedures that distort empirical data in order to guarantee their factual anonymity. At the same time the information content of data sets should not be reduced too much and should still be useful for scientific research. This paper investigates the effect of microaggregation on the estimation of a linear regression by ordinary least squares. It studies, by way of an extensive simulation experiment, the bias of the slope parameter estimator induced by various microaggregation techniques. Some microaggregation procedures lead to consistent estimates while others imply an asymptotic bias for the estimator.
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Volume (Year): 225 (2005)
Issue (Month): 5 (October)
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References listed on IDEAS
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- Feige, Edgar L & Watts, Harold W, 1972. "An Investigation of the Consequences of Partial Aggregation of Micro-Economic Data," Econometrica, Econometric Society, vol. 40(2), pages 343-60, March.
- Winfried Pohlmeier & Sandra Lechner, 2003. "Schätzung ökonometrischer Modelle auf der Grundlage anonymisierter Daten," CoFE Discussion Paper 03-04, Center of Finance and Econometrics, University of Konstanz.
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