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Table 1 Patient and tumor characteristics

From: Is the use of preoperative breast MRI predictive of mastectomy?

  MRI (n = 628) No MRI (n = 817) P-value
Age, years    
  Mean 53 60 <0.001
  <50 43% 26% <0.001
  >50 56% 73% <0.001
Ethnicity    
  Asian 3% 2% NS
  Black 8% 12% NS
  Hispanic 6% 4% NS
  White 78% 79% NS
  Other/unknown 5% 3% NS
Stage    
  0 23% 27% 0.08
  1 39% 39% NS
  2 29% 22% NS
 3 7% 8% NS
 4 2% 3% NS
Tumor size (cm) 1.6 1.5 NS
Histology    
  DCIS 24% 26% NS
  Infiltrating ductal 59% 53% NS
  Infiltrating lobular 12% 11% NS
  Other 5% 10% NS
  1. Abbreviations: DCIS ductal carcinoma in situ, MRI magnetic resonance imaging, NS non-significant.