Three parametric distributions used to fit the Kaplan-Meier survival curve. The exponential (constant hazard) is that the least good fit. The Weibull, with an increasing (power function) hazard, fits the curve better than the exponential. The best fit is the Gompertz model, which has an exponentially increasing hazard. Source: Chapter 8. Statistical Treatment of Surgical Outcome Data, Cardiac Surgery in the Adult, 4e Citation: Cohn LH. Cardiac Surgery in the Adult, 4e; 2012 Available at: http://mhmedical.com/ Accessed: July 28, 2017 Copyright © 2017 McGraw-Hill Education. All rights reserved
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