Table 2.

Validity coefficients of the Simpson-Angus Scale (SAS) mean score at different cutoff values. The optimal cut-off point range is presented in bold text.

SAS mean cut-off	0.25	0.35	0.45	0.55	0.65	0.75	0.85	0.95	1.05	1.15
Sensitivity	1.0	1.0	1.0	1.0	1.0	0.96	0.87	0.78	0.70	0.52
Specificity	0.17	0.36	0.45	0.49	0.62	0.74	0.86	0.86	0.89	0.93
Positive Predictive Value	0.27	0.32	0.35	0.37	0.44	0.96	0.65	0.64	0.67	0.71
Negative Predictive Value	1.0	1.0	1.0	1.0	1.0	0.98	0.96	0.93	0.91	0.87