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. 2016 Jul 22;16:107. doi: 10.1186/s12887-016-0641-7

Fig. 2.

Fig. 2

Performance assessment (sensitivity and specificity) plots for NP-C cases versus NP-C non-cases and controls. High sensitivity and specificity was achieved with NP-C cases versus NP-C non-cases or controls, and aided the assignment of cut-off scores (vertical dashed lines) for low (<3), moderate (3–5) and high (≥6) likelihood