TITLE

Evaluating Mode Effects in Mixed-Mode Survey Data Using Covariate Adjustment Models

AUTHOR(S)
Vannieuwenhuyze, Jorre T. A.; Loosveldt, Geert; Molenberghs, Geert
PUB. DATE
March 2014
SOURCE
Journal of Official Statistics (JOS);Mar2014, Vol. 30 Issue 1, p1
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
The confounding of selection and measurement effects between different modes is a disadvantage of mixed-mode surveys. Solutions to this problem have been suggested in several studies. Most use adjusting covariates to control selection effects. Unfortunately, these covariates must meet strong assumptions, which are generally ignored. This article discusses these assumptions in greater detail and also provides an alternative model for solving the problem. This alternative uses adjusting covariates, explaining measurement effects instead of selection effects. The application of both models is illustrated by using data from a survey on opinions about surveys, which yields mode effects in line with expectations for the latter model, and mode effects contrary to expectations for the former model. However, the validity of these results depends entirely on the (ad hoc) covariates chosen. Research into better covariates might thus be a topic for future studies.
ACCESSION #
94750619

 

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