Figure 4.

Two-way sensitivity analysis of the effects of reoperation for tissue valve failure and patient age at implantation on the recommended valve type.

Notes: RR = relative risk where RR = 1 is the baseline estimate, RR = 1.5 is 50% higher than the baseline estimate, and RR = 0.5 is 50% lower than the baseline estimate. Copyright © 2000. Elsevier. Reprinted with permission from Birkmeyer NJ, Birkmeyer JD, Tosteson AN, et al. Prosthetic valve type for patients undergoing aortic valve replacement: a decision analysis. Ann Thorac Surg. 2000;70:1946–1952.²⁶