behav sc que(i guess not nbme que) - shab_naj

[ArchivalUser]

A researcher develops a new test to detect lung cancer at an earlier stage. The test picks up the lung cancer in 85% of patients with lung cancer diagnosed by the gold standard and is negative in 90% of patients without lung cancer. The prevalence of lung cancer in the population of 1000 being studied is 3%. What is the sensitivity of the test?

A. 32.5%
B. 66%
C. 85%
D. 87.5%
E. 90%

[ArchivalUser]

The test picks 85% cases..out of diseased people means..sensitivity is 85%..simple...no calculation...remember sensitivity and specificity are intrinsic properties of a test..Not affected by prevalence of disease..