Page 1 of 1: yield

kannan · Credits: 6918 My Scrapbook

commonest measure of yield is
a]sensitivity
b]specificity
c]positive predictive value
d]neg predictive value

SATVIK · Credits: 958 My Scrapbook

The question must have been asked in the sense that which affects the yield more.
Yield is the amount of previously unrecognized disease that is diagnosed as a result of the screening effort. Though the yield depends on the sensitivity, specificity and the prevalence of the disease; the major factor affecting yield is the prevalence of the disease. The prevalence of the disease indirectly affects the positive predictive value of the test i.e., higher the prevalence of a disease in a community more are the chances of a person under screening for the disease turning out to be postive for the condition and hence more is the positive predictive value. The answer I think is option c.
What was the answer given as.

kannan · Credits: 6918 My Scrapbook

sorry, I don't know the answer.

This qn appeared in model test of coaching class in our college.

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