Combining landline and mobile phone samples A dual frame approach
Venue
Gesis working paper 2011/13 (2011)
Publication Year
2011
Authors
Mario Callegaro, Oztas Ayhan, Siegfried Gabler, Sabine Haeder, Ana Villar
BibTeX
Abstract
More and more households abandon their landline phones and rely solely on cell
phones. This implies a challenge for survey researchers: since the cell phone only
households are not included in the frames for landline telephone surveys, samples
based on these frames are in danger to be seriously biased due to undercoverage, if
respondents who do not have a landline are systematically different from
respondents who have a landline. Thus, strategies for combining samples from
different frames need to be developed. In this paper we give theoretical
foundations for a dual frame approach to sampling, explain how samples can be
optimally allocated from these two frames, and describe an empirical application of
a survey conducted in Germany that used a dual frame approach.
