To validate the Braunwald classification of unstable angina as a predictor of in-hospital cardiac complications; to determine which factors of the Braunwald classification contributed significantly to this prediction; and to devise a method of combining these predictive factors into an overall odds ratio for complications.
Calvin, J. E., Klein, L. W., Vandenberg, B. J., Meyer, P., Condon, J. V., Snell, R. J., … Parrillo, J. E. (1995). Risk Stratification in Unstable Angina: Prospective Validation of the Braunwald Classification. JAMA: The Journal of the American Medical Association, 273(2), 136–141. https://doi.org/10.1001/jama.1995.03520260058033