Table 2

Presentation diagnostic tests for diagnosis of ACS

Test	Sensitivity for ACS		Specificity for ACS		PPV for ACS		NPV for ACS		ROC area under curve
Test	%	CI	%	CI	%	CI	%	CI	ROC area under curve
Total number of patients = 208; total positive for ACS = 131; total negative for ACS = 77.
IMA	82	74 to 88	46	34 to 57	72	64 to 79	59	46 to 72	0.68
ECG	45	36 to 54	91	82 to 96	89	80 to 96	49	41 to 58	0.68
cTnT	20	13 to 28	99	93 to 100	96	81 to 100	42	35 to 50	0.64
ECG and cTnT	53	44 to 62	90	81 to 95	90	81 to 95	53	44 to 62	0.74
IMA and cTnT	90	84 to 95	44	33 to 56	73	66 to 80	72	57 to 84	0.77
IMA and ECG	92	86 to 96	43	32 to 55	73	66 to 80	77	61 to 88	0.80
IMA and ECG and cTnT	95	90 to 98	42	30 to 53	74	66 to 80	84	69 to 94	0.83