From: Which diagnostic tests are most useful in a chest pain unit protocol?
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) |