Table 6 Relative risk of a cardiac event over the following six months
From: Which diagnostic tests are most useful in a chest pain unit protocol?
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) |