Table 4.

Sensitivity, specificity and correct classifaction of malignancy based on predictive score

Cut-point	Sensitivity	Specificity	Correctly Classified	LR+	LR-
(> = 2)	100 %	0.00 %	8.95 %	1.00
(> = 3)	93.48 %	28.21 %	34.05 %	1.30	0.23
(> = 4)	86.96 %	52.78 %	55.84 %	1.84	0.25
(> = 5)	65.22 %	72.65 %	71.98 %	2.38	0.48
(> = 6)	45.65 %	87.82 %	84.05 %	3.75	0.62
(> = 7)	28.26 %	94.87 %	88.91 %	5.51	0.76
(> = 8)	23.91 %	97.86 %	91.25 %	11.19	0.78
(> = 9)	13.04 %	99.15 %	91.44 %	15.26	0.88
(> = 10)	4.35 %	99.79 %	91.25 %	20.35	0.96

The positive likelihood ratio (LR+) is the ratio of the probability of a positive test among the truly positive subjects to the probability of a positive test among the truly negative subjects. The negative likelihood ratio (LR–) is the ratio of the probability of a negative test among the truly positive subjects to the probability of a negative test among the truly negative subjects