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Prenotification in Web-Based Access Panel SurveysThe Influence of Mobile Text Messaging Versus E-Mail on Response Rates and Sample Composition
To compare the effectiveness of different prenotification and invitation procedures in a web-based three-wave access panel survey over 3 consecutive months, we experimentally varied the contact mode in a fully crossed two-factorial design with (a) three different prenotification conditions (mobile short messaging service [SMS], e-mail, no prenotice) and (b) two "invitation and reminder" conditions (SMS, e-mail). A group with nearly complete mobile phone coverage was randomly assigned to one of these six experimental conditions. As expected, SMS prenotifications outperformed e-mail prenotifications in terms of response rates across all three waves. Furthermore, e-mail invitation response rates outperformed those for SMS invitations. The combination of SMS prenotification and e-mail invitation performed best. The different experimental treatments did not have an effect on the sample composition of respondents between groups.
Key Words: web survey online access panel nonresponse prenotification SMS
This version was published on May
1, 2008 Social Science Computer Review, Vol. 26, No. 2,
213-223 (2008) |
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