Egyptian Journal of Radiology and Nuclear Medicine

Table 2 Distribution of different volumetric density grades in case and control groups in premenopausal, postmenopausal and all age groups

From: Evaluation of volumetric breast density as a risk factor for breast carcinoma in pre- and postmenopausal women, its association with hormone receptor status and breast carcinoma subtypes defined by histology and tumor markers

VDG	Group	Premenopausal	Postmenopausal	All age groups	P value
A	Case	0	1	1	0.009
	Control	4	26	30
B	Case	10	18	28	0.002
	Control	42	69	11
C	Case	40	67	107	0.015
	Control	32	29	61
D	Case	29	20	49	0.819
	Control	31	11	42
Total	Case	79	106	185	0.065
	Control	109	135	246

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