A multivariable logistic regression equation to evaluate prostate cancer

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Abstract

Background/Purpose: A possible means of decreasing prostate cancer mortality is through improved early detection. We attempted to create an equation to predict the likelihood of having prostate cancer. Methods: Between January 2005 and May 2008, patients who received prostate biopsies were retrospective evaluated. The relationship between the possibility of prostate cancer and the following variables were evaluated: age; serum prostate specific antigen (PSA) level, prostate volume, numbers of prostatic biopsies, digital rectal examination (DRE) findings, and the presence of hypoechoic nodule under transrectal ultrasonography. Results: A multivariate regression model was created to predict the possibility of having prostate cancer, and a receiver-operating characteristic (ROC) curve was drawn based on the predictive scoring equation. Using a predictive equation, P=1/(1-e -x), where X=-4.88,+1.11 (if DRE positive),+0.75 (if hypoechoic nodule of prostate present),+1.27 (when 7

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Wang, J. C., Huan, S. K., Kuo, J. R., Lu, C. L., Lin, H., & Shen, K. H. (2011). A multivariable logistic regression equation to evaluate prostate cancer. Journal of the Formosan Medical Association, 110(11), 695–700. https://doi.org/10.1016/j.jfma.2011.09.005

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