Table 3.

Table of correlation between the nature of the pulmonary nodules and the Brock model, by using a threshold of 5% probability of malignancy.

	Benign nodules N = 34	Malignant nodules N = 11	Undetermined nodules N = 36
Categorized as benign (< 5%)	22	1	11
Categorized as potentially malignant (> 5%)	12	10	25

The performances of the Brock model for the diagnosis of malignant nodules using a threshold of 5% are as follows: sensitivity = 90.9% [59–100]; specificity = 64.7% [46–80]; PPV = 45.4% [24–68]; NPV = 95.6% [78–100].