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