Q61
Single choice
Six hundred asymptomatic men with prostatic nodules are given a PSA test to screen for prostate cancer. With a cutoff of 5 ng/mL, the PSA results are positive in 200 cases. Of these, 100 persons are confirmed on biopsy and follow-up
testing to have the disease; however, 50 of the individuals who had negative test results are also shown to have the disease based on biopsy. You have been asked to screen another similar group of 50 men using the PSA test.
What proportion of persons having prostatic cancers will you correctly identify in the new group?