Table 6

Relative risk of a cardiac event over the following six months

Test

Event rate:

positive test

Event rate:

negative test

Relative risk (95% CI)


Serial ECG & ST monitoring N = 690

5/41

27/649

2.72 (1.10 to 6.74)

Initial CK-MB(mass) N = 687

5/39

27/648

2.84 (1.15 to 7.02)

Delayed CK-MB(mass) N = 601

5/44

23/557

2.57 (1.02 to 6.47)

Delta CK-MB(mass) N = 601

3/31

25/570

2.10 (0.67 to 6.61)

Any positive CK-MB(mass) N = 601

8/59

24/628

3.24 (1.52 to 6.93)

Troponin T > = 0.1 ng/ml N = 686

8/33

24/673

6.80 (3.31 to 13.96)

Troponin T > = 0.03 ng/ml N = 686

9/54

23/632

4.58 (2.23 to 9.40)

Exercise treadmill test N = 422

9/37

4/385

19.03 (6.10 to 59.34)


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

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