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Title: The mobile-only population in Portugal and its impact in a dual frame telephone survey
Authors: Vicente, P.
Reis, E.
Keywords: Telephone survey methodology
Mobile phone surveys
Mobile-phone only households
Noncoverage rate
Issue Date: 2009
Publisher: European Survey Research Association
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.
Peer reviewed: yes
DOI: 10.18148/srm/2009.v3i2.1708#sthash.YBnTkLZU.dpuf
ISSN: 1864-3361
Publisher version: The definitive version is available at:
Appears in Collections:BRU-RI - Artigos em revistas científicas internacionais com arbitragem científica

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