Q: Given a passage, construct a question on the basis of the information present in the passage. Construct the question in such a way that (i) it is unambiguous, (ii) it is answerable from the passage, (iii) its answer is unique (iv) it answer uses text phrases from the passage. Avoid creating questions that (i) can't be answered correctly without actually understanding the passage and (ii) uses the same words or phrases given in the passage.
It has been suggested that prostate specific antigen has no predictive value for prostate cancer after a first negative biopsy has been performed. We compared the performance operating characteristics of prostate specific antigen for prostate cancer between a first and subsequent prostate biopsy in a group of men with complete verification of cancer status.', 'From the 18,882 participants in the Prostate Cancer Prevention Trial we examined men in the placebo group who had only a first biopsy or a first and second prostate biopsy with a prostate specific antigen and digital rectal examination within 1 year before each biopsy. The receiver operating characteristic curve was estimated for prostate specific antigen for detection of prostate cancer on the first biopsy compared to the second, and the C-statistics were compared.', 'Of this group 5,608 men had a first biopsy and 687 of those with a negative first biopsy underwent a second biopsy. The C-statistic was 0.650 (95% CI 0.632, 0.668) for the first biopsy and 0.664 (95% CI 0.607, 0.721) for the second biopsy. The C-statistic for the second biopsy was statistically significantly greater than 0.5 (p <0.001) and overlapped with that from the first biopsy.
A:
Is the performance of prostate specific antigen for predicting prostate cancer maintained after a prior negative prostate biopsy?