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. 2021 May 29:1–6. doi: 10.1080/23744235.2021.1931434

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© 2021 Society for Scandinavian Journal of Infectious Diseases

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Figure 2. — Estimated PPV for the assays, calculated at seroprevalences of 1%, 5%, 10%, 15%, 20%, 25% and 50%. Calculations were based on sensitivity, specificity and respective 95% CI limits (solid lines = mean values; grey areas = 95% CI). Dashed lines represent mean sensitivity and specificity data from the manufacturers' kit inserts. Dotted horizontal lines refer to 90% PPV.