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Table 2 Values for sensitivity, specificity positive predictive value, negative predictive value, positive likelihood ratio, and negative likelihood ratio for different cutoff points for HbA1c determined during screenings for insulinoma

From: Usefulness of hemoglobin A1c and glycated albumin measurements for insulinoma screening: an observational case-control study

HbA1c cut-off (%) S (%) Sp (%) PPV (%) NPV (%) PLR NLR
4.7 64.5 100.0 100.0 91.6 – 0.35
4.8 64.5 99.2 95.2 91.5 77.42 0.36
4.9 71.0 99.2 95.7 93.0 85.16 0.29
5.0 77.4 99.2 96.0 94.4 92.90 0.23
5.1 83.9 97.5 89.7 95.9 33.55 0.17
5.2 83.9 90.8 70.3 95.6 9.15 0.18
5.3 90.3 90.8 71.8 97.3 9.85 0.11
5.4 90.3 85.0 60.9 97.1 6.02 0.11
5.5 100.0 73.3 49.2 100.0 3.75 0
  1. S, sensitivity; Sp, specificity; PPV, positive predictive value; NPV, negative predictive value; PLR, positive likelihood ratio; NLR, negative likelihood ratio
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