Task: Answer Verification
Input (English): Question: Does anticoagulant or aspirin treatment affect the positive predictive value of an immunological fecal occult blood test in patients undergoing colorectal cancer screening : results from a nested in a cohort case-control study?
Answer: The positive predictive value of i-FOBT for significant neoplasia is not affected by ongoing anticoagulant or chronic low-dose aspirin therapy. This finding suggests that there is no need to interrupt these treatments before i-FOBT for CRC screening.
Output (English): no