Table 4 Optimal glucose-HbA1c ratio (GHR) 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 GHR cut-off in mmol/L

2.11

1.72

2.10

1.43

Sensitivity in % (95% CI)

50.4 (44.2–56.6)

55.0 (48.1–61.8)

28.6 (21.6–35.6)

41.1 (28.2–54.0)

Specificity in % (95% CI)

82.5 (81.0–83.9)

82.7 (81.3–84.1)

84.1 (82.5–85.6)

78.1 (76.1–80.0)

Positive predictive value in % (95% CI)

22.0 (18.6–25.4)

18.5 (15.4–21.6)

11.7 (8.5–14.9)

5.8 (3.5–8.1)

Negative predictive value in % (95% CI)

94.4 (93.5–95.4)

96.2 (95.5–97.0)

94.1 (93.0–95.1)

97.6 (96.8–98.4)