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Interviewer Effects on the Measurement of Physical Performance in a Cross-National Biosocial Survey

Abstract

Biosocial surveys increasingly use interviewers to collect objective physical health measures (or “biomeasures”) in respondents’ homes. While interviewers play an important role, their high involvement can lead to unintended interviewer effects on the collected measurements. Such interviewer effects add uncertainty to population estimates and have the potential to lead to erroneous inferences. This study examines interviewer effects on the measurement of physical performance in a cross-national and longitudinal setting using data from the Survey of Health, Ageing and Retirement in Europe. The analyzed biomeasures exhibited moderate-to-large interviewer effects on the measurements, which varied across biomeasure types and across countries. Our findings demonstrate the necessity to better understand the origin of interviewer-related measurement errors in biomeasure collection and account for these errors in statistical analyses of biomeasure data.

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Posted in: Journal Article Abstracts on 09/22/2023 | Link to this post on IFP |
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