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Figure 4: The ROC curve generated by plotting the true positive rate (sensitivity) against the false positive rate (1-specificity) of the PR to discriminate between children with and without PI (PI). The dotted straight line is the reference line representing an indescriptive test with an area under the curve of 0.5. The ROC curve indicates 100% sensitivity, 42.4% specificity of the PR for establishing the diagnosis of PI with a cutoff value >0.23

Figure 4: The ROC curve generated by plotting the true positive rate (sensitivity) against the false positive rate (1-specificity) of the PR to discriminate between children with and without PI (PI). The dotted straight line is the reference line representing an indescriptive test with an area under the curve of 0.5. The ROC curve indicates 100% sensitivity, 42.4% specificity of the PR for establishing the diagnosis of PI with a cutoff value >0.23