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Fig. 1 | BMC Medical Informatics and Decision Making

Fig. 1

From: Use of diagnostic likelihood ratio of outcome to evaluate misclassification bias in the planning of database studies

Fig. 1

Expected PPV of the DB study as a function of DLR+ and disease prevalence. A Positive-predictive value (PPV) of the database (DB) study is plotted against positive likelihood ratio (DLR+). Each line represents a fixed value of disease prevalence of the DB study population. A hypothetical range of disease prevalence values is shown (0.025–0.4). B Expected PPV is plotted against a hypothetical range of the disease prevalence of the DB study. Each line represents a fixed value of DLR+. A range of values for the DLR+ is shown (20–1000). Both plots are based on Eq. 1B

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BMC Medical Informatics and Decision Making

ISSN: 1472-6947

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