Journal of Official Statistics, Vol.25, No.2, 2009. pp. 203226

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Analyzing Contact Sequences in Call Record Data. Potential and Limitations of Sequence Indicators for Nonresponse Adjustments in the European Social Survey

In recent years more and more survey organizations have begun collecting data at every contact attempt; such call record data are increasingly and successfully used for fieldwork management purposes, often to enhance efforts to reduce nonresponse. These paradata are also seen as candidates for post-survey nonresponse adjustment because they are available for both respondents and nonrespondents. In the past, summary measures from contact data, for example the number of contact attempts or the occurrence of a soft refusal, have been used to study nonresponse. Such summary measures are not without problems. Here we will discuss an alternative set of indicators that take the sequence of contacts into account. We examine different characterizations of contact sequences. The richness of the European Social Survey data allows us to discuss reliability by replicating our analyses across three time points and fourteen countries.

Paradata, nonresponse adjustment, call records, sequence analysis, optimal matching

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