#january2020usmle2k
A 57-year-old man with a history of bleeding per rectum visits his physician to discuss the results of his recent CT colpography test. The test was positive for the presence of a colorectal polyp. The sensitivity and specificity of this test to detect a colorectal polyp is 75% and 90% respectively.
What is the probability that this patient indeed has a colorectal polyp?
A – 92%
B – 90%
C – 88%
D – 86%
E – 84%
A 57-year-old man with a history of bleeding per rectum visits his physician to discuss the results of his recent CT colpography test. The test was positive for the presence of a colorectal polyp. The sensitivity and specificity of this test to detect a colorectal polyp is 75% and 90% respectively.
What is the probability that this patient indeed has a colorectal polyp?
A – 92%
B – 90%
C – 88%
D – 86%
E – 84%
