Hello,

Could you please help with the following?

The prevalence of undetected diabetes in a population to be screened 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 180 mg% or higher is considered positive. The sensitivity and specificity associated with this screening test are 22.9% and 99.8%, respectively.

• What is the predictive value of a positive test?
• What is the predictive value of a negative test?

Please show calculations.

Thank you! (: