Research Article

Diagnosis of Non-ST-Elevation Acute Coronary Syndrome by the Measurement of Heart-Type Fatty Acid Binding Protein in Serum: A Prospective Case Control Study

Table 3

Receiver operating characteristics curve analysis.

Test characteristicCTnIcTnTH-FABP

Criterion>0.009  g/L>9  g/L>6.5 ng/mL
Area under the ROC curve (AUC) 0.730.710.79
95% Confidence interval0.59 to 0.840.57 to 0.830.66 to 0.89
Significance level P (Area = 0.5)0.00030.002<0.0001
Sensitivity4046.756.7
95% CI22.7–59.428.3–65.737.4–74.5
Specificity100100100
95% CI84.6–100.084.6–100.084.6–100.0
+LR1.21.712.47
95% CI0.8–1.91.0–3.01.8–86.8
−LR0.60.530.43
95% CI0.4–0.80.4–0.70.3–0.7
+PV100100100
95% CI73.5–100.076.8–100.079.4–100.0
−PV5557.962.9
95% CI38.5–70.740.8–73.744.9–78.5

+PV: positive predictive value, −PV: negative predictive value, +LR: positive likelihood ratio, and −LR: negative likelihood ratio.