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Table 4 Diagnostic characteristics of the simplified risk score cut-off points in the three cohorts

From: Risk score to predict false-positive ST-segment elevation myocardial infarction in the emergency department: a retrospective analysis

 

Derivation

Internal validation

External validation

Sensitivity % (95% CI)

83.3 (75.6–97.0)

81.8 (65.7–97.9)

81.8 (65.7–97.9)

Specificity % (95% CI)

76.2 (72.1–80.4)

74.3 (65.7–82.8)

64.8 (57.9–71.8)

Positive predictive value % (95% CI)

43.9 (36.4–51.3)

40.9 (26.4–55.4)

22.0 (13.0–30.9)

Negative predictive value % (95% CI)

93.4 (93.1–97.7)

94.9 (90.1–99.8)

96.7 (93.6–99.9)

Accuracy % (95% CI)

77.5 (73.9–81.2)

75.6 (68.0–83.2)

66.7 (60.2–73.1)

  1. CI confidence interval