Health Education & Behaviour Change — Practice

In a screening programme for type 2 diabetes, a new capillary glucose test is applied to 1000 individuals, of whom 200 truly have the disease. The test correctly identifies 160 diseased persons and falsely labels 80 healthy persons as positive. If the prevalence in the screened population were to double while sensitivity and specificity remain unchanged, what happens to the positive predictive value of the test?