Table 2.

Receiver operating characteristic (ROC) curve analysis: possible cutoff values and corresponding sensitivity, specificity, and efficiency.

Cutoff	Sensitivity	Specificity	Efficiency
0.88	0.94	0.30	0.86
0.84	0.91	0.30	0.84
0.83	0.89	0.30	0.81
0.81	0.86	0.30	0.79
0.77	0.84	0.50	0.80
0.75	0.83	0.70	0.81
0.73	0.80	0.70	0.79
0.68	0.77	0.70	0.76
0.66	0.74	0.70	0.74
0.65	0.71	0.70	0.71
0.64	0.69	0.70	0.69
0.63	0.69	0.90	0.71
0.61	0.66	0.90	0.69
0.57	0.63	0.90	0.66
0.56	0.60	0.90	0.64
0.53	0.57	0.90	0.61
0.52	0.54	0.90	0.59
0.51	0.53	0.90	0.58