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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