Table 5

Likelihood ratios for the diagnosis of ACS with myocyte necrosis or clinical myocardial infarction at presentation

Positive likelihood ratio (95% CI)

Negative likelihood ratio (95% CI)


Serial ECG & ST monitoring N = 690

5.4 (3.0 to 9.8)

0.801 (0.696 to 0.922)

Initial CK-MB(mass) N = 687

20.9 (11.3 to 38.5)

0.579 (0.464 to 0.722)

Delayed CK-MB(mass) N = 601

31.7 (17.0 to 58.9)

0.373 (0.261 to 0.534)

Delta CK-MB(mass) N = 601

153.1 (37.6 to 623.5)

0.444 (0.327 to 0.602)

Any positive CK-MB(mass) N = 601

28.1 (16.9 to 46.7)

0.291 (0.194 to 0.435)

Troponin T > = 0.1 ng/ml N = 686

~25*

~0*

Troponin T > = 0.03 ng/ml N = 686

281.5 (70.4 to 1126)

0.104 (0.049 to 0.221)


*Unable to calculate precisely as no false positives were recorded

Goodacre et al. BMC Emergency Medicine 2005 5:6   doi:10.1186/1471-227X-5-6

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