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Agreement between pharmaceutical claims data and patient-reported medication use after stroke
Lachlan L Dalli1, Nadine E Andrew2, Dominique A Cadilhac1,3
1Stroke and Ageing Research, Department of Medicine, School of Clinical Sciences at Monash Health, Monash University, Clayton, VIC, Australia.
Objectives:
To assess the agreement between pharmaceutical claims data and patient-reported medication use after stroke.
Methods:
Claims data from the Pharmaceutical Benefits Scheme were used to estimate medication use for a subset of participants registered in the Australian Stroke Clinical Registry in 2016. Estimates on medication use were validated against patient-reported responses (considered the reference standard).
Key Findings:
For antihypertensive and lipid-lowering medications, the sensitivity of claims data was excellent (85-87%) and the specificity was good (73-78%). Whereas for antithrombotic medications, sensitivity was modest (61%), but specificity was excellent (85%).
Conclusions:
Pharmaceutical claims data can be used to infer medication use after stroke with mostly good to excellent sensitivity and specificity compared with the patient report.
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