Evaluation of the diagnostic indices and clinical utility of qualitative cardiodetect® test kit in diagnosis of ami within 12 hours of onset of chest pain in the emergency department

Table 4 Area under the ROC curves (AUC).

Test	Area	P-value	95% CI
≤ 4 h (group 1)
Cardio Detect (CardioD)	0.568	0.542	0.350-0.787
Troponin T (TropT)	0.550	0.655	0.325-0.775
Repeated CardioD	0.733	0.127	0.449-1.017
Combine CardioD & TropT	0.744	0.049	0.520-0.969
> 4 but ≤ 12 h (group 2)
CardioD	0.698	0.113	0.493-0.903
TropT	0.857	0.004	0.650-1.064
Repeated CardioD	0.500	1.000	-0.102 to 1.102
Combine CardioD & TropT	0.769	0.031	0.608-0.930
> 12 but ≤ 24 h (group 3)
CardioD	0.611	0.505	0.308-0.914
TropT	1.000	0.003	1.000-1.000
Combine CardioD & TropT	0.611	0.505	0.308-0.914
> 24 h (group 4)
CardioD	0.333	0.655	-0.283 to 0.949
TropT	1.000	0.180	1.000 - 1.000
Combine CardioD & TropT	0.833	0.371	0.384-1.282

*The closer the ROC curve comes to the 45-degree diagonal line of the ROC space, the less accurate the test. An AUC of 1 represents a perfect test; elsewhere an area of 0.5 represents an uninformative test.

ISSN: 1865-1380