Epidemiologists decided to investigate the validity of new diagnostic tool for breast cancer.They used this new diagnostic tool for breast cancer in 150 women with biopsy-proven breast cancer in 300 age- and race-matched control women.The results of the new tool were positive in 136 cases and in 35 control women,all of whom showed no evidence of cancer at biopsy.What is the sensitivity of new diagnosis tool for breast cancer?
A) 9%
B) 12%
C) 33%
D) 91%
E) 88%

Question

Quizplus · Accepted Answer

The sensitivity of the new diagnostic test is the number of positive cases among cases divided by the number of total cases,which equals 136 divided by 150.The sensitivity is 91%.

Epidemiologists Decided to Investigate the Validity of New Diagnostic Tool