Table 3

Sensitivity, specificity, positive and negative predictive values at ≤6 hours from symptom onset (95% confidence intervals given in parentheses)

TestSensitivity (%)Specificity (%)Positive predictive value (%)Negative predictive value (%)
*Using the standard formula for confidence interval analysis it was not possible to calculate the limits for such high percentages.
ECG74 (61, 88)98*97*85 (76, 93)
Troponin T26 (12, 39)91 (84, 99)67 (43, 91)64 (53, 74)
Myoglobin36 (21, 51)84 (74, 94)61 (41, 81)65 (54, 76)
Total CK23 (10, 36)82 (72, 92)47 (25, 70)61 (50, 72)
CKMB activity24 (10, 37)86 (77, 95)53 (29, 77)62 (52, 73)
CKMB mass44 (28, 61)85 (76, 95)67 (48, 86)70 (59, 81)