ORIGINAL RESEARCH-OUTCOMES ASSESSMENT: Quality of Erection Questionnaire Correlates: Change in Erection Quality With Erectile Function, Hardness, and Psychosocial Measures in Men Treated With Sildenafil for Erectile Dysfunction

The brief, easy-to-administer QEQ is responsive to the benefits of sildenafil treatment of men for ED and has convergent validity with measures of clinical and psychosocial outcomes. Lowy M, Collins S, Bloch M, Gillman M, Lording D, Sutherland P, Wang H, and Stecher V. Quality of Erection Questionnaire correlates: Change in erection quality with erectile function, hardness, and psychosocial measures in men treated with sildenafil for erectile dysfunction. J Sex Med 2007;4:83-92.