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Accuracy of self-reported medicines use compared to pharmaceutical claims data amongst a national sample of older Australian women

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journal contribution
posted on 06.12.2017, 00:00 by X Dolja-Gore, S Pit, Lynne Parkinson, A Young, J Byles
This study assessed agreement between two measures of medicine use, self-report by mail and pharmaceutical claims data, for a national sample (N=4,687) of older women aged 79 to 84 in 2005, from the Australian Longitudinal Study on Women’s Health. Medicines used for common chronic diseases in older people were selected, with pharmaceutical claims data retrieval periods of three and six months. Proportion of observed agreement between self-report and six month retrieval period ranged between 44% (nervous system medicines) and 94% (glucose lowering medicines). For three month retrieval, aspirin (35%) and folic acid (48%) had lowest agreement. Women were least able to accurately report use of nervous system medicines (sensitivity <50%), and most accurately report glucose lowering medicines use (sensitivity >80%). Specificity was consistently high across all classes, suggesting women could accurately report using a medicine. Pharmaceutical claims data can assist evaluation of judicious medicines use, changes to availability and uptake of medicines, and track medicine expenditure for chronic conditions. Over-the-counter medicines, medicines not covered by pharmaceutical subsidies and those used on an as needed basis may be best measured by self-report, as use may be underestimated using pharmaceutical claims data.

Funding

Category 3 - Industry and Other Research Income

History

Volume

3

Issue

1

Start Page

25

End Page

32

Number of Pages

8

eISSN

2165-7467

ISSN

2165-7459

Language

en-aus

Peer Reviewed

Yes

Open Access

No

External Author Affiliations

University of Newcastle; University of Sydney;

Era Eligible

Yes

Journal

Open journal of epidemiology.

Exports