]>A Population-Based Study of Peyronie's Disease: Prevalence and Treatment Patterns in the United States : Figure 1
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Figure 1: Diagram of study design. Data for this study were collected in 2 phases. In Phase  1, panel participants were screened for the presence of symptoms, past treatment, and a diagnosis of Peyronie’s disease. In Phase  2, eligibility to complete the full survey was determined by participants’ responses to the screening items in Phase  1. KN = Knowledge Networks.