Table 5.

Results of the univariate analysis on the LUNGx dataset. Units of measure: maximum 3D diameter [mm], surface area [mm${}^2$], and volume [mm${}^3$]; all other features are in dimensionless units (range 0–1).

Feature	Benign	Malignant	p-Value	Significant
Max 3D diameter	23.5 ± 15.1	26.1 ± 10.4	0.029	No
Surface area	1457.2 ± 1882.1	1698.9 ± 1252.6	0.012	Yes
Voxel volume	2782.5 ± 4550.9	3436.0 ± 3432.3	0.011	Yes
Angelidakis elongation	0.070 ± 0.078	0.069 ± 0.059	0.334	No
Angelidakis flatness	0.201 ± 0.139	0.132 ± 0.096	0.015	Yes
Angelidakis compactness	0.730 ± 0.152	0.799 ± 0.110	0.017	Yes
Kong elongation	0.127 ± 0.126	0.126 ± 0.103	0.382	No
Kong flatness	0.315 ± 0.198	0.224 ± 0.139	0.014	Yes
Maximum projection sphericity	0.734 ± 0.148	0.803 ± 0.105	0.019	Yes
Sphericity	0.662 ± 0.129	0.625 ± 0.087	0.036	No
Volume density	0.359 ± 0.096	0.339 ± 0.071	0.047	No