Clinical Chemistry
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Clinical Chemistry 39: 896, 1993;
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Clinical Chemistry, Vol 39, 896-896, Copyright © 1993 by the American Association for Clinical Chemistry

Medically significant concentrations of prostate-specific antigen in serum assessed

L. H. Bernstein , R. A. Rudolph , M. M. Pinto , N. Viner , and H. Zuckerman

Vol. 36

p. 517. In the article by L.H. Bernstein, R.A. Rudolph, M.M. Pinto, N. Viner, and H. Zuckerman entitled "Medically significant concentrations of prostate-specific antigen in serum assessed," 1990;36:515-8, the text describing Table 4 reports reversed values for sensitivity and positive predictive value and likewise for specificity and negative predictive value. The text should read, "Table 4, a reorganized Table 3, defines the occurrence of binary class patterns with respect to carcinoma of the prostate by stage compared with nondisease. The table allows the estimation of 44.4% sensitivity, 97.1% specificity, a negative predictive value of 79%, and a positive predictive value of 87.8% for PSA >22.8 ng/mL."

Vol. 38

p. 2557. In the latter to the editor by J.D. Mitchell, B.J. Perrigo, and V.A. Mason-Daniel entitled "Falsely negative urine drug assay results due to filtration," 1992;38:2556-7, the units in the first paragraph at the top of p. 2557 should have been micrograms per liter (µg/L), not pg/L.






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Copyright © 1993 by the American Association for Clinical Chemistry.