Journal of general internal medicine
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To use qualitative methods to explore audiotape evidence of unanticipated confusion between benign prostatic hyperplasia (BPH) and prostate cancer in using a videotape BPH treatment decision aid (DA). ⋯ Overall knowledge increases with DA use may mask incorrect theories of disease process. Further research should identify decision support designs and clinical counseling strategies to address persistence of beliefs contrary to new information presented in evidence-based DAs.