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Indications of recall bias found in a retrospective study of physical activity and myocardial infarction
Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Medical Sciences, Occupational and Environmental Medicine.
2008 (English)In: Journal of Clinical Epidemiology, ISSN 0895-4356, Vol. 61, no 8, 840-847 p.Article in journal (Refereed) Published
Abstract [en]

Objective: To evaluate the presence of recall bias in retrospective studies of physical activity and myocardial infarction. Study Design and Setting: In 2005, seventy-eight cases who had suffered from a myocardial infarction and 243 control subjects, who had previously participated in the Swedish WOLF (Work, Lipids, and Fibrinogen) study, were asked about their physical activity level during 1990-2005. The answers about recalled past leisure time, occupational, and household physical activity level were compared with physical activity level as reported at the baseline examination of the WOLF study in 1992-1998. Results: The proportion who recalled the same activity level as originally reported ranged from 69% to 96% (cases) and 69% to 89% (controls), and the kappa values ranged from 0.30 to 0.91 (cases) and 0.46 to 0.59 (controls), with the exception of perceived physical workload in household work, which showed low agreement between the originally stated and later recalled activity levels. Some differences were found between cases and controls regarding recall of past occupational activity, indicating the presence of recall bias in this domain of physical activity. Conclusion: We cannot preclude the existence of recall bias when using retrospectively recalled information about occupational physical activity in studies of physical activity and myocardial infarction.

Place, publisher, year, edition, pages
2008. Vol. 61, no 8, 840-847 p.
Keyword [en]
bias (epidemiology), epidemiologic methods, exercise, myocardial infarction, physical activity, questionnaires, recall, retrospective studies
National Category
Medical and Health Sciences
URN: urn:nbn:se:uu:diva-109964DOI: 10.1016/j.jclinepi.2007.09.004ISI: 000257720800014PubMedID: 18359191OAI: oai:DiVA.org:uu-109964DiVA: diva2:274898
Available from: 2009-11-02 Created: 2009-11-02 Last updated: 2009-11-02Bibliographically approved

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