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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