Title
How much confidence can we have in EU-SILC? Complex sample designs and the standard error of the Europe 2020 poverty indicators
Author
Faculty/Department
Faculty of Social Sciences. Sociology
Publication type
article
Publication
Dordrecht ,
Subject
Sociology
Source (journal)
Social indicators research: an international and interdisciplinary journal for quality-of-life measurement. - Dordrecht
Volume/pages
110(2013) :1 , p. 89-110
ISSN
0303-8300
ISI
000314336300006
Carrier
E
Target language
English (eng)
Full text (Publishers DOI)
Affiliation
University of Antwerp
Abstract
If estimates are based on samples, they should be accompanied by appropriate standard errors and confidence intervals. This is true for scientific research in general, and is even more important if estimates are used to inform and evaluate policy measures such as those aimed at attaining the Europe 2020 poverty reduction target. In this article I pay explicit attention to the calculation of standard errors and confidence intervals, with an application to the European Union Statistics on Income and Living Conditions (EU-SILC). The estimation of accurate standard errors requires among others good documentation and proper sample design variables in the dataset. However, this information is not always available. Therefore, I complement the existing documentation on the sample design of EU-SILC and test the effect on estimated standard errors of various simplifying assumptions with regard to the sample design. It is shown that accounting for clustering within households is of paramount importance. Although this results in many cases in a good approximation of the standard error, taking as much as possible account of the entire sample design generally leads to more accurate estimates, even if sample design variables are partially lacking. The effect is illustrated for the official Europe 2020 indicators of poverty and social exclusion and for all European countries included in the EU-SILC 2008 dataset. The findings are not only relevant for EU-SILC users, but also for users of other surveys on income and living conditions which lack accurate sample design variables.
E-info
https://repository.uantwerpen.be/docman/iruaauth/a56d08/d9d798f4a3c.pdf
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