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Verknüpfung von Befragungs- und Prozessdaten : Selektivität durch fehlende Zustimmung der Befragten?


  • Hartmann, Josef
  • Krug, Gerhard

    () (Institut für Arbeitsmarkt- und Berufsforschung (IAB), Nürnberg [Institute for Employment Research, Nuremberg, Germany])


"Linking data from different sources can be used to compensate for the weaknesses characteristic for the single sources and therefore significantly increase the potential for analyses. This requires that linking data implies no consequences that cancel out the advantages. Considering this background the contribution analyses to which extent we face such consequences when linking administrative data of the 'Bundesagentur für Arbeit' (BA) to survey data on the level of individuals. Due to reasons of data protection the respondents have to be asked to allow linking their survey data to their administrative data. This necessity may result in a kind of 'linkage bias', as it may be, that their willingness to admit correlates with other characteristics relevant for the research question. This may bias results. Using data of a study, in which persons were asked, whether they allow linking the survey data to administrative data, we analyse whether there is selectivity in admission regarding a number of characteristics that are known to influence respondent behaviour. Using multilevel analysis we show that only some characteristics are correlated with allowing data linking: Women, foreign persons, persons with low income and persons interested in protecting private information as for example on income or social benefits tend to be underrepresented in the restricted sample using the linked data set. In order to investigate the consequences of this selection for specific research questions we propose a simple test based on a 'seemingly unrelated estimation' and present two examples." (Author's abstract, IAB-Doku) ((en))

Suggested Citation

  • Hartmann, Josef & Krug, Gerhard, 2007. "Verknüpfung von Befragungs- und Prozessdaten : Selektivität durch fehlende Zustimmung der Befragten?," IAB Discussion Paper 200713, Institut für Arbeitsmarkt- und Berufsforschung (IAB), Nürnberg [Institute for Employment Research, Nuremberg, Germany].
  • Handle: RePEc:iab:iabdpa:200713

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    References listed on IDEAS

    1. Jan Pickery & Geert Loosveldt & Ann Carton, 2001. "The Effects of Interviewer and Respondent Characteristics on Response Behavior in Panel Surveys," Sociological Methods & Research, , vol. 29(4), pages 509-523, May.
    2. Heckman, James, 2013. "Sample selection bias as a specification error," Applied Econometrics, Publishing House "SINERGIA PRESS", vol. 31(3), pages 129-137.
    3. Jenkins, Stephen P. & Lynn, Peter & Jäckle, Annette & Sala, Emanuela, 2004. "Linking household survey and administrative record data: what should the matching variables be?," ISER Working Paper Series 2004-23, Institute for Social and Economic Research.
    4. Hummel, Elisabeth & Jacobebbinghaus, Peter & Kohlmann, Annette & Oertel, Martina & Wübbeke, Christina & Ziegerer, Manfred, 2005. "Stichprobe der Integrierten Erwerbsbiografien : IEBS 1.0, Handbuch-Version 1.0.0 (Integrated Employment Biographies Sample IEBS 1.0)," FDZ Datenreport. Documentation on Labour Market Data 200506_de, Institut für Arbeitsmarkt- und Berufsforschung (IAB), Nürnberg [Institute for Employment Research, Nuremberg, Germany].
    5. Achatz, Juliane & Gartner, Hermann & Glück, Timea, 2004. "Bonus oder Bias? Mechanismen geschlechtsspezifischer Entlohnung," IAB Discussion Paper 200402, Institut für Arbeitsmarkt- und Berufsforschung (IAB), Nürnberg [Institute for Employment Research, Nuremberg, Germany].
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    More about this item


    prozessproduzierte Daten; Befragung; Datenanalyse; Datenqualität; Stichprobenfehler;

    JEL classification:

    • C - Mathematical and Quantitative Methods
    • J - Labor and Demographic Economics
    • Z - Other Special Topics

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