Table 3

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

Positive likelihood ratio (95% CI)

Negative likelihood ratio (95% CI)


Serial ECG & ST monitoring N = 690

7.1 (3.8 to 13.1)

0.700 (0.543 to 0.901)

Initial CK-MB(mass) N = 687

20.8 (12.5 to 34.7)

0.378 (0.236 to 0.605)

Delayed CK-MB(mass) N = 601

25.1 (16.5 to 38.2)

0.045 (0.007 to 0.307)

Delta CK-MB(mass) N = 601

61.4 (39.1 to 118.1)

0.044 (0.006 to 0.300)

Any positive CK-MB(mass) N = 601

~25*

~0*

Troponin T > = 0.1 ng/ml N = 686

70.4 (34.1 to 140.8)

0.169 (0.079 to 0.387)

Troponin T > = 0.03 ng/ml N = 686

23.5 (16.1 to 34.2)

0.037 (0.005 to 0.255)


*Unable to calculate precisely as no false negative were recorded

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

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