Epidemiology

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Can anyone answer this question? The prevalence of undetected diabetes in a population to be screen ed is approximately 1.5% and it is assumed that 10,000 persons will be screened. The screening test will measure blood serum glucose content. A value of 180mg% or higher is considered positive. The sensitivity and specdificity associated with this screening test are 22.9% and 99.8% respectively. (a) What is the predictuve value of a positive test?(b) what is the predictive value of a negative test?

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