Table 3. Select the model with the optimal cutoff points for with the maximal diagnostic accuracy.

Model	Criteria	Optimal Cutoff Points	Diagnostic Accuracy	Sensitivity	Specificity
4 criteria	A2, A5, A7, A9	3	81.1%	84.4%	80.2%
5 criteria	A2, A5, A6, A7, A9	3	82.9%	80.2%	84.0%
6 criteria	A2, A4, A5, A6, A7, A9	3	84.3%	78.4%	87.5%
7 criteria	A2, A4, A5, A6, A7, A9, A10	3	83.3%	72.3%	90.5%
7 criteria	A2, A4, A5, A6, A7, A9, A10	4	83.3%	86.8%	82.2%
8 criteria	A1, A2, A4, A5, A6, A7, A9, A10	4	82.9%	78.8%	84.7%
10 criteria	A1, A2, A4, A5, A6, A7, A9, A10, A11, A12	4	82.9%	78.8%	84.7%