October 27, 2009Hypertension
Validation of a Case Definition to Define Hypertension Using Administrative Data
Why the study?
Is an administrative data case definition valid for identifying hypertension compared to physician chart diagnosis?
Population
3,362 patients >35 years of age from 48 urban and 16 rural family physician clinics in Alberta and British…
Comparison
Administrative data case definition for… vs Physician chart diagnosis of hypertension
Design
Cross-sectional
Authors
Discussion
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Member takes
Implication
This definition supports administrative hypertension surveillance; leaves open validation in other populations and datasets.
Structured PICO
Is an administrative data case definition valid for identifying hypertension compared to physician chart diagnosis?
P
Population
3,362 patients >35 years of age from 48 urban and 16 rural family physician clinics in Alberta and British Columbia, Canada
I
Intervention
Administrative data case definition for hypertension ('2 claims within 2 years or 1 hospitalization')
C
Comparator
Physician chart diagnosis of hypertension
O
Outcome
Validity indices (sensitivity, specificity, positive predictive value, negative predictive value, and kappa)
Administrative data using the definition of '2 claims within 2 years or 1 hospitalization' is a valid method for identifying hypertension cases for surveillance and research.
Cite This Study
Quan et al. (2009) studied this question.