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Chronic Dis Inj Can. 2013 Jun;33(3):160-6.

Identifying cases of congestive heart failure from administrative data: a validation study using primary care patient records.

[Article in English, French; Abstract available in French from the publisher]

Author information

1
Institute for Clinical Evaluative Sciences, Toronto, Ontario, Canada. sue.schultz@ices.on.ca

Abstract

in English, French

INTRODUCTION:

To determine if using a combination of hospital administrative data and ambulatory care physician billings can accurately identify patients with congestive heart failure (CHF), we tested 9 algorithms for identifying individuals with CHF from administrative data.

METHODS:

The validation cohort against which the 9 algorithms were tested combined data from a random sample of adult patients from EMRALD, an electronic medical record database of primary care physicians in Ontario, Canada, and data collected in 2004/05 from a random sample of primary care patients for a study of hypertension. Algorithms were evaluated on sensitivity, specificity, positive predictive value, area under the curve on the ROC graph and the combination of likelihood ratio positive and negative.

RESULTS:

We found that that one hospital record or one physician billing followed by a second record from either source within one year had the best result, with a sensitivity of 84.8% and a specificity of 97.0%.

CONCLUSION:

Population prevalence of CHF can be accurately measured using combined administrative data from hospitalization and ambulatory care.

KEYWORDS:

congestive heart failure; epidemiologic methods; population prevalence; validation studies

PMID:
23735455
[Indexed for MEDLINE]
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