Skip to main content

Table 1 Breast density and increased breast cancer risk

From: Relationship of mammographic densities to breast cancer risk

  ACR.A ACR.B ACR.C ACR.D
Count % Count % Count % Count %
Neg 11,319 97.8 23,485 97.3 11,850 96.7 1255 86.3
Pos 250 2.2 650 2.7 400 3.3 200 13.7
  A vs B A vs C A vs D B vs C B vs D C vs D   
p 0.003 0 0 0.002 0 0   
Sig. HS HS HS HS HS HS   
RRR 1.2531 1.5283 7.2153 1.2196 5.7579 4.7211   
95 CI 1.08–1.45 1.30–1.79 5.94–8.77 1.07–1.38 4.87–6.81 3.95–5.65   
Risk ACR B Pos.Sig. ACR C Pos.Sig. ACR D Pos.Sig. ACR C Pos.Sig. ACR D Pos.Sig. ACR D Pos.Sig.