Table 3 Optimal HbA1c cut-off values and performance of the cut-off values in predicting 1-year all-cause mortality in diabetic and non-diabetic ST-segment elevation myocardial infarction and non-ST-segment elevation myocardial infarction patients

Statistical optimal HbA1c cut-off in mmol/L

13.3

6.0

12.2

6.3

Sensitivity in % (95% CI)

4.0 (1.6–6.4)

27.7 (21.6–33.9)

4.3 (1.2–7.5)

14.3 (5.1–23.5)

Specificity in % (95% CI)

97.6 (97.0–98.2)

75.1 (73.5–76.7)

96.5 (95.7–97.2)

92.2 (91.0–93.5)

Positive predictive value in % (95% CI)

14.1 (6.0–22.2)

7.4 (5.5–9.3)

8.3 (2.4–14.2)

5.7 (1.9–9.5)

Negative predictive value in % (95% CI)

91.2 (90.1–92.3)

93.6 (92.5–94.6)

93.2 (92.1–94.2)

97.0 (96.2–97.9)