Using Analysis of Gini (Anogi) for Detecting Whether Two Sub-Samples Represent the Same Universe: The SOEP Experience

41 Pages Posted: 8 Apr 2004

See all articles by Joachim R. Frick

Joachim R. Frick

German Institute for Economic Research (DIW Berlin) (Deceased) ; Institute for the Study of Labor (IZA) (Deceased)

Jan Goebel

German Institute for Economic Research (DIW Berlin) - SOEP

Edna Schechtman

Ben-Gurion University of the Negev - Department of Industrial Engineering and Management

Gert G. Wagner

German Institute for Economic Research (DIW Berlin); Berlin University of Technology; German Socio-Economic Panel Study (SOEP)

Shlomo Yitzhaki

Hebrew University of Jerusalem - Department of Economics; National Bureau of Economic Research (NBER)

Date Written: March 2004

Abstract

A particular shortcoming of panel surveys is potential bias arising from selective attrition. Based on data from the German Socio-Economic Panel Study (SOEP) we analyze potential artifacts (level, structure, inequality of income) by comparing results from two independently drawn panel sub-samples, started in 1984 and 2000, respectively. Both sub-samples carried on using the same set of follow-up rules. We apply ANOGI (ANalysis Of GIni) techniques, the equivalent of ANOVA (ANalysis Of VAriance) performed on the basis of the Gini coefficient. The decomposition followed is presented in Yitzhaki (1994). We rearrange, reinterpret and use the decomposition in the comparison of sub-populations from which the different subsamples were drawn. Taking into account indicators for income, and for control purposes those for education and satisfaction as well, significant differences between these two subsamples with respect to (income) inequality are found in the first year, which start to fade away in wave 2 and disappear in wave 3. We find credible indication for these differences to be driven by changes in response behavior of short term panel members rather than by attrition among members of the longer running sub-sample.

Keywords: panel studies, survey research, inequality decomposition, Gini, ANOGI

JEL Classification: C81, D31, D63

Suggested Citation

Frick, Joachim R. and Goebel, Jan and Schechtman, Edna and Wagner, Gert G. and Yitzhaki, Shlomo, Using Analysis of Gini (Anogi) for Detecting Whether Two Sub-Samples Represent the Same Universe: The SOEP Experience (March 2004). Available at SSRN: https://ssrn.com/abstract=521446

Joachim R. Frick

German Institute for Economic Research (DIW Berlin) (Deceased) ( email )

Mohrenstraße 58
Berlin, 10117
Germany

Institute for the Study of Labor (IZA) (Deceased)

P.O. Box 7240
Bonn, D-53072
Germany

Jan Goebel

German Institute for Economic Research (DIW Berlin) - SOEP ( email )

Mohrenstraße 58
Berlin, 10117
Germany
+49-30-89789-377 (Phone)
+49-30-89789-200 (Fax)

Edna Schechtman

Ben-Gurion University of the Negev - Department of Industrial Engineering and Management ( email )

Beer-Sheva 84105
Israel
+972 8 647 2596 (Phone)
+972 8 647 2958 (Fax)

Gert G. Wagner

German Institute for Economic Research (DIW Berlin) ( email )

Mohrenstraße 58
Berlin, 10117
Germany
+49 30 8 978 9290 (Phone)
+49 30 8 978 9200 (Fax)

HOME PAGE: http://www.diw.de/programme/jsp/MA.jsp?language=en&uid=gwagner

Berlin University of Technology ( email )

Straße des 17
Berlin, 10623
Germany
+30 8 978 9283 (Phone)

German Socio-Economic Panel Study (SOEP) ( email )

DIW Berlin
10108 Berlin, Berlin
Germany
+49 30 8978 9290 (Phone)
+49 30 8978 9109 (Fax)

HOME PAGE: http://www.diw/en/soep

Shlomo Yitzhaki (Contact Author)

Hebrew University of Jerusalem - Department of Economics ( email )

Mount Scopus
Jerusalem, 91905
Israel
+972 2 659 2201 (Phone)
+972 2 652 2319 (Fax)

National Bureau of Economic Research (NBER) ( email )

1050 Massachusetts Avenue
Cambridge, MA 02138
United States

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