Table 3.

Spearman’s correlation coefficient and p values for each texture feature and breast density level

Texture feature	Spearman correlation coefficient (rho)	p value
Variance	0.43	< 0.001
Skewness	-0.81	< 0.001
Kurtosis	-0.35	< 0.001
Entropy	-0.49	< 0.001
Contrast	0.48	< 0.001
Correlation	0.49	< 0.001
Energy	0.47	< 0.001
Homogeneity	-0.31	0.003
GLN	-0.59	< 0.001
RLN	-0.66	< 0.001
SRLGE	0.41	0.363

GLN Grey-level nonuniformity, RLN Run-length nonuniformity, SRLGE Short-run low-grey-level emphasis