Dysrhythmia hazard after hospitalization for myocardial infarction: prognosis by ejection fraction compared with signal-averaged ECG
| Autor: | H. Handelsman, J.J. Bailey, A.S. Berson |
|---|---|
| Rok vydání: | 2002 |
| Předmět: |
medicine.medical_specialty
education.field_of_study Ejection fraction medicine.diagnostic_test business.industry Population medicine.disease Confidence interval Signal-averaged electrocardiogram Graph Internal medicine medicine Cardiology Myocardial infarction False positive rate education business Electrocardiography |
| Zdroj: | Computers in Cardiology 2000. Vol.27 (Cat. 00CH37163). |
| DOI: | 10.1109/cic.2000.898637 |
| Popis: | The authors retrieved reports of left ventricular ejection fraction (LVEF) and signal-averaged ECGs (SAECG) used to predict risk of a dysrhythmic event. From each report the number of cases with and without events was extracted to establish accurate values for true positive rate (tpr=sensitivity) and false positive rate (fpr=1 minus specificity). For all the LVEF reports these values were collected and tpr values were plotted vs fpr. The (fpr,tpr) data were summarized by a meta ROC graph using the method of Moses and Shapiro (1993). A composite weighted mean value and 95% confidence interval were also derived. A summary meta-ROC curve for the SAECG reports was similarly obtained. Meta-ROC analysis of multiple reports better summarizes the performances of different prognostic methods, and allows the effect of combining tests for a larger population to be simulated. |
| Databáze: | OpenAIRE |
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