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Odds ratio of a positive surgical margin stratified by stage, grade and Gleason sum. Data were derived using multivariate logistic regression analysis adjusting for age, race, stage, Gleason sum, prostate-specific antigen (PSA), registry site and year of diagnosis. Data are displayed as odd ratios with standard errors of a positive surgical margin using Gleason 6, PSA <4 ng/mL and pathological stage T2 as the referent.
