Identifying cases of congestive heart failure from administrative data: a validation study using primary care patient records.
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It is 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.Abstract:
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.read more
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Mortality and Revascularization among Myocardial Infarction Patients with Schizophrenia: A Population-Based Cohort Study:
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References
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Users' Guides to the Medical Literature: III. How to Use an Article About a Diagnostic Test: B. What Are the Results and Will They Help Me In Caring for My Patients?
TL;DR: The patient is a 28-year-old man whose acute onset of shortness of breath and vague chest pain began shortly after completing a 10-hour auto trip, and the physician is very apprehensive about his symptoms.
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TL;DR: You are back where you were in the previous article1 on diagnostic tests: in the library studying an article that will guide you in interpreting ventilation-perfusion (V/Q) lung scans.
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Gender differences in the utilization of health care services.
TL;DR: Women have higher medical care service utilization and higher associated charges than men, and these findings have implications for health care.
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Diabetes in Ontario: determination of prevalence and incidence using a validated administrative data algorithm.
TL;DR: Administrative data can be used to establish population-based incidence and prevalence of diabetes, which is increasing in Ontario and is considerably higher than self-reported rates.