Bibtex export
@article{ Vicente2009, title = {The mobile-only population in Portugal and its impact in a dual frame telephone survey}, author = {Vicente, Paula and Reis, Elizabeth}, journal = {Survey Research Methods}, number = {2}, pages = {105-111}, volume = {3}, year = {2009}, issn = {1864-3361}, doi = {https://doi.org/10.18148/srm/2009.v3i2.1708}, abstract = {"In 2007 the percentage of mobile-only households in Portugal reached 36%; this is one of the highest levels in EU27 countries according to the EU E-Communications Households Survey. To assess the extent and nature of the potential bias in fixed phone surveys created by the absence of mobile-only households, a dual frame survey was conducted in which both fixed phones and mobile phones were used to collect data. There are significant differences between fixed phone respondents and mobile-only respondents in several demographic variables; however, we find that merging the fixed phone and the mobile-only sample produces general population estimates on substantive variables that are not significantly different from those obtained with the fixed phone sample alone." (author's abstract)}, keywords = {Antwortverhalten; Telefon; private household; Auswirkung; survey; error; cell phone; Befragung; Methode; method; comparison; Mobiltelefon; Portugal; Einfluss; telephone interview; Portugal; impact; response behavior; influence; Fehler; Telefoninterview; Vergleich; telephone; Privathaushalt}}