Association of the Differences in Average Glandular Dose with Breast Cancer Risk

Table 3

Correlation between NAGD differences in MLO-view FFDM images with confounding variables.

Variables	Correlation	value
Pearson product-moment correlation
Age	0.051	0.010
Age at menarche	0.013	0.518
Age at first birth	-0.020	0.324
Spearman rank correlation^†
BI-RADS density	-0.029	0.152
Menopausal status	0.081	<0.001
Parity	0.020	0.317
Family history of breast cancer	-0.039	0.053

^†The risk factors were treated as bicategorical variables in the analysis.