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Home >> Community Medicine >> ForumTopic: mcq of the day 20/03/2011

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Author:Message
munni11

Total Posts: 3



Posted: Sun Mar 20, 2011 04:47 pm

can u please give explanation for todays mcq ,thankyou
drS786

Total Posts: 54



Posted: Mon Mar 21, 2011 02:17 am

Question: A screening test is used in the same way in two similar populations; but the proportion of false positive results among those who test positive in the population A is lower than those who test positive in population B. What is the likely explanation ?
A) The specificity of the test is lower in population A
B) The prevalence of the disease is lower in population A
C) The prevalence of the disease is higher in population A
D) The specificity of the test is higher in population A
You marked " C "
yes someone could give explanation
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