From "Valuing Viagra: What Is Restoring Potency Worth?" Effective Clinical Practice, July/August 1999. 2:171-175.
Figure 2. Sensitivity analysis of the utility of impotence by the number of pills per week. The y-axis is annotated with utilities reported by patients in the Beaver Dam study8) to provide benchmarks for comparison (standardized to a baseline utility of 1). QALY = quality-adjusted life-year.>