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Attrition

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By: Sebastian Kocar | Edited by: Paul Atkinson, Sara Delamont, Alexandru Cernat, Joseph W. Sakshaug & Richard A. Williams Published: 2020 | Length: 5 | DOI: |
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“Attrition” is broadly defined as a loss of data in research and is mostly used interchangeably with the term “panel attrition,” particularly in longitudinal, cohort, or panel research. The term “data attrition” is sometimes used instead, but it can be associated with any loss of data, including unit- or item-nonresponse that leads to data missingness. In longitudinal research, “panel attrition” is defined as unit nonresponse, which might or might not result in permanent nonresponse from a particular data collection wave onward. In contrast, in online panel research, “panel attrition” is generally defined as permanent nonresponse, such as participants opting out of the study or being removed from the panel for different reasons by the panel organization.

Attrition as panel attrition occurs when respondents drop out of ...

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