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115 Social & Preventive Medicine

A screening test is used in same way in two similar populations, but the proportion of false positive results among those who test positive in population A is lower than among those who test positive in population B. What is the likely explanation for this finding?

AThe prevalence of disease is higher in population A
BThe prevalence of disease is lower in population A
CThe specificity of the test is lower in population A
DThe specificity of the test is higher in population A
Social & Preventive Medicine
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