The Diagnostic Value of Quantitative CT Analysis of Ground-Glass Volume Percentage in Differentiating Epidermal Growth Factor Receptor Mutation and Subtypes in Lung Adenocarcinoma

Table 2

CT Characteristics.

CT Feature	EGFR Mutation+	EGFR Mutation-	P Value
No. of patients	163	146
GGO volume percentage (%)	52.8 ± 25.7%	29.0 ± 20.7%	P < 0.001
Morphologic CT feature
Air bronchogram	35	29	p = 0.727
Bubblelike lucency	21	16	p = 0.603
Cavity	19	25	p = 0.170
Notch	65	43	p = 0.550
GGO with solid portion	73	61	p = 0.594
Lobulated border	59	48	p = 0.540
Round	21	13	p = 0.264

Note: Age compared using independent t-tests.
The rest groups were analyzed using χ2 tests.