Figure 1
From: Mammographic density and risk of breast cancer by age and tumor characteristics
Pooled associations of categorical mammographic density for tumor type and morphological subtypes of invasive breast cancer by age. Odds ratios and 95% confidence intervals adjusted for age, body mass index, and study are shown for each category of mammographic density (MD): 1, 0 to 10% MD; 2, 11 to 25% MD (reference); 3, 26 to 50% MD; 4, 51% + MD). (A) Tumor type. (B) Histology. (C) Tumor grade. (D) Tumor size. (E) Lymph node involvement. (F) Estrogen receptor (ER) status. (G) Progesterone receptor (PR) status. (H) Human epidermal growth factor receptor 2 (HER2) status. DCIS, ductal carcinoma in situ.