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https://doi.org/10.18148/srm/2009.v3i2.1708
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The mobile-only population in Portugal and its impact in a dual frame telephone survey
Die Mobiltelefonbevölkerung in Portugal und ihr Einfluß auf eine telefonische Dual-Frame-Befragung
[journal article]
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 ho... view more
"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)... view less
Keywords
private household; survey; error; cell phone; method; comparison; Portugal; telephone interview; impact; response behavior; influence; telephone
Classification
Methods and Techniques of Data Collection and Data Analysis, Statistical Methods, Computer Methods
Research Design
Document language
English
Publication Year
2009
Page/Pages
p. 105-111
Journal
Survey Research Methods, 3 (2009) 2
ISSN
1864-3361
Status
Published Version; peer reviewed
Licence
Deposit Licence - No Redistribution, No Modifications