Asked by Pearse Dolan on Jul 30, 2024

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A physical examination,digital rectal exam,was used to screen for prostate cancer in 290 men with biopsy-proven prostate cancer and in 516 age- and race-matched control men,all of whom showed no evidence of cancer at biopsy.The results of the physical examination were positive in 136 cases and in 165 control men.What is the sensitivity of the physical examination?

A) 32%
B) 47%
C) 56%
D) 57%
E) Cannot calculate it based on given information

Digital Rectal Exam

A physical examination method where a healthcare provider inserts a gloved, lubricated finger into the rectum to check for abnormalities.

Biopsy-Proven

Confirmation of a disease or condition by examining a tissue sample removed from a patient's body.

Sensitivity

The ability of a test to correctly identify those with the disease (true positive rate), indicating its reliability in detecting cases.

  • Understand the concept and calculation of sensitivity in screening tests.
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MD
Maria DimitrovskaJul 31, 2024
Final Answer :
B
Explanation :
Sensitivity equals the "number of people who identified as diseased by the test" divided by the "number of people who actually have the disease." The sensitivity is 0.47 (136 divided by 290).