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dc.contributor.authorSiggeirsdottir, Kristin
dc.contributor.authorAspelund, Thor
dc.contributor.authorSigurdsson, Gunnar
dc.contributor.authorMogensen, Brynjolfur
dc.contributor.authorChang, Milan
dc.contributor.authorJonsdottir, Birna
dc.contributor.authorEiriksdottir, Gudny
dc.contributor.authorLauner, Lenore J
dc.contributor.authorHarris, Tamara B
dc.contributor.authorJonsson, Brynjolfur Y
dc.contributor.authorGudnason, Vilmundur
dc.date.accessioned2007-11-07T15:04:23Z
dc.date.available2007-11-07T15:04:23Z
dc.date.issued2007-09-22
dc.date.submitted2007-11-07
dc.identifier.citationEur. J. Epidemiol. 2007, 22(9):631-9en
dc.identifier.issn0393-2990
dc.identifier.pmid17653601
dc.identifier.doi10.1007/s10654-007-9163-9
dc.identifier.urihttp://hdl.handle.net/2336/14479
dc.descriptionTo access publisher full text version of this article. Please click on the hyperlink in Additional Link fielden
dc.description.abstractIntroduction and objective Misreporting fractures in questionnaires is known. However, the effect of misreporting on the association of fractures with subsequent health outcomes has not been examined. Methods Data from a fracture registry (FR) developed from an extensive review of radiographic and medical records were related to self-report of fracture for 2,255 participants from the AGES Reykjavik Study. This data was used to determine false negative and false positive rates of self-reported fractures, correlates of misreporting, and the potential effect of the misreporting on estimates of health outcomes following fractures. Results In women, the false positive rate decreased with age as the false negative rate increased with no clear trend with age in men. Kappa values for agreement between FR and self-report were generally higher in women than men with the best agreement for forearm fracture (men 0.64 and women 0.82) and the least for rib (men 0.28 and women 0.25). Impaired cognition was a major factor associated with discordant answers between FR and self-report, OR 1.7 (95% CI: 1.3-2.1) (P < 0.0001). We estimated the effect of misreporting on health after fracture by comparison of the association of the self-report of fracture and fracture from the FR, adjusting for those factors associated with discordance. The weighted attenuation factor measured by mobility and muscle strength was 11% (95% CI: 0-24%) when adjusted for age and sex but reduced to 6% (95% CI: -10-22%) when adjusted for cognitive impairment. Conclusion Studies of hip fractures should include an independent ascertainment of fracture but for other fractures this study supports the use of self-report.
dc.language.isoenen
dc.publisherKluwer Academic Publishersen
dc.relation.urlhttp://www.springerlink.com/content/880l43u152251h35en
dc.subject.meshPubMed - in processen
dc.titleInaccuracy in self-report of fractures may underestimate association with health outcomes when compared with medical record based fracture registry.en
dc.typeArticleen
dc.format.digYES
html.description.abstractIntroduction and objective Misreporting fractures in questionnaires is known. However, the effect of misreporting on the association of fractures with subsequent health outcomes has not been examined. Methods Data from a fracture registry (FR) developed from an extensive review of radiographic and medical records were related to self-report of fracture for 2,255 participants from the AGES Reykjavik Study. This data was used to determine false negative and false positive rates of self-reported fractures, correlates of misreporting, and the potential effect of the misreporting on estimates of health outcomes following fractures. Results In women, the false positive rate decreased with age as the false negative rate increased with no clear trend with age in men. Kappa values for agreement between FR and self-report were generally higher in women than men with the best agreement for forearm fracture (men 0.64 and women 0.82) and the least for rib (men 0.28 and women 0.25). Impaired cognition was a major factor associated with discordant answers between FR and self-report, OR 1.7 (95% CI: 1.3-2.1) (P < 0.0001). We estimated the effect of misreporting on health after fracture by comparison of the association of the self-report of fracture and fracture from the FR, adjusting for those factors associated with discordance. The weighted attenuation factor measured by mobility and muscle strength was 11% (95% CI: 0-24%) when adjusted for age and sex but reduced to 6% (95% CI: -10-22%) when adjusted for cognitive impairment. Conclusion Studies of hip fractures should include an independent ascertainment of fracture but for other fractures this study supports the use of self-report.


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