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Table 3 Diagnostic performances for the prediction of a major adverse cardiac event

From: Use of troponin assay after electrical injuries: a 15-year multicentre retrospective cohort in emergency departments

For prediction of MACE in the whole population (n = 533 patients*)

The 4 high-risk clinical items

Initial positive troponin assay

Troponin rise

Sensitivity, % (95% CI)

100.0 (54.1–100)

83.3 (35.9–99.6)

33.3 (4.3–77.7)

Specificity, % (95% CI)

76.6 (73.4–79.6)

97.7 (96.1–98.8)

99.2 (98.3–99.7)

Predictive value, % (95% CI)

   

Positive

4.3 (3.8–4.9)

29.3 (17.5–44.6)

24.9 (7.7–56.9)

Negative

100.0 (99.9–100.0)

99.9 (99.2–99.9)

99.5 (99.1–99.7)

Likelihood ratio (95% CI)

   

Positive

4.6 (4.1–5.2)

36.6 (18.8–71.1)

43.3 (10.8–172.7)

Negative

0

0.17 (0.03–1.02)

0.7 (0.4–1.2)

Accuracy, % (95% CI)

76.9 (73.7–79.8)

97.6 (95.9–98.7)

98.7 (97.7–99.4)

For prediction of MACE in high-risk population (= 153 patients*)

Initial positive troponin assay

Troponin rise

Sensitivity, % (95% CI)

83.3 (35.9–99.6)

33.3 (4.3–77.7)

Specificity, % (95% CI)

95.2 (90.4–98.1)

97.2 (93.5–99.1)

Predictive value, % (95% CI)

  

Positive

41.7 (24.2–61.5)

28.5 (8.8–62.4)

Negative

99.3 (95.9–99.9)

97.7 (96.1–98.7)

Likelihood ratio (95%CI)

  

Positive

17.5 (7.8–39.2)

11.8 (2.8–49.0)

Negative

0.2 (0.0–1.1)

0.7 (0.4–1.2)

Accuracy, % (95% CI)

94.8 (90.0–97.7)

95.1 (90.9–97.7)

  1. *Performed in patients with troponin assay
  2. MACE major adverse cardiac event, 95% CI 95% confidence interval