ORIGINAL RESEARCH-OUTCOMES ASSESSMENT: Validation of the Erection Hardness Score

The EHS has desirable measurement properties, including being highly responsive to treatment. This one-item PRO is robust and easy to use for evaluating erection hardness. Psychometric analysis supports the use of the EHS as a simple, reliable, and valid tool for the assessment of erection hardness in clinical trials research. Mulhall JP, Goldstein I, Bushmakin AG, Cappelleri JC, and Hvidsten K. Validation of the Erection Hardness Score.