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Table 3 Relative risk of breast cancer by fibroadenoma status

From: Breast fibroadenomas are not associated with increased breast cancer risk in an African American contemporary cohort of women with benign breast disease

  Age-adjusted relative riska (95% CI) P valueb Fully adjusted relative riskc (95% CI) P valueb
No fibroadenoma on biopsy Ref   Ref  
Fibroadenoma 0.64 (0.48, 0.85)d 0.003 0.67 (0.48, 0.93)e 0.017
Under age 50 years
 No fibroadenoma on biopsy Reference   Reference  
 Fibroadenoma 0.71 (0.45, 1.11)f 0.133 0.58 (0.34, 0.96)g 0.037
Age 50 years or older
 No fibroadenoma on biopsy Reference   Reference  
 Fibroadenoma 0.68 (0.46, 0.98)h 0.042 0.79 (0.52, 1.19)i 0.275
  1. aMultivariable logistic regression model adjusting for age at biopsy
  2. bWald test statistic
  3. cMultivariable logistic regression model adjusting for age, proliferative disease, and cellular atypia at biopsy
  4. Number at risk: d3845, e3761, f2234, g2071, h1611, i1536