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Mixed Mode Design and Respondent Incentives: Effects on Individual Full Response Outcomes in a Longitudinal Survey Context
Fecha
2016Autor
Lynn, Peter
ESSEX UNIVERSITY
Institución
Resumen
The present study aims to characterize the effects of a sequential mixed mode survey
design and different levels of respondent incentives on the individual full response
outcome in a longitudinal survey context in the UK. To reach this purpose, the
Understanding Society Innovation Panel waves five, six and seven were analysed.
Logistic regression, random effects models, and fixed effects models were used as
complementary analysis. The results show that there is no statistically significant effect
of mode design on the propensity of being respondent when the level of incentive, sample
origin and other basic geographical and personal characteristics are controlled. This
evidence refutes the first hypothesis of the study, which predicted a statistically
significant impact from mixed mode survey design compared to single mode design. In
contrast, the same analysis showed that the level of incentive has a statistically significant
impact on the likelihood of being respondent. People who received a high level of
incentive or, to a lesser extent, a middle level of incentive, were found more likely to be
a respondent compared to people who received a low level of incentive. These results
support the second research hypothesis, which predicted this effect. Overall, the findings
suggest that, in the context of an ongoing longitudinal survey, a higher level of incentive
contributes to an increase the individual response rates, and the incorporation of a
sequential mixed mode design of web and face-to-face does not affect them, at least in
the initial waves.