Dysrhythmia hazard after hospitalization for myocardial infarction: two ECG prognostic methods compared.
We retrieved reports of heart rate variability and signal-averaged electrocardiograms (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 heart rate variability reports, these values were collected and tpr values were plotted versus fpr. The (fpr,tpr) data were summarized by a meta ROC graph using the method of Moses and Shapiro. 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.
Center for Information Technology, National Institutes of Health, Bethesda, MD 20892-5620, USA. jjbailey@helix.nih.gov
J J
JJ
Bailey
A S
AS
Berson
H
H
Handelsman
D001145:Arrhythmias, Cardiac / Q000175:diagnosis* / Q000209:etiology*; D016757:Death, Sudden, Cardiac / Q000209:etiology; D004562:Electrocardiography / Q000379:methods*; D006339:Heart Rate / Q000502:physiology; D006801:Humans; D009203:Myocardial Infarction / Q000150:complications* / Q000503:physiopathology; D011237:Predictive Value of Tests; D011379:Prognosis; D012372:ROC Curve; D018570:Risk Assessment; D012680:Sensitivity and Specificity