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Table 1 Baseline patient characteristics

From: Preoperative core needle biopsy is accurate in determining molecular subtypes in invasive breast cancer

Characteristic No. %
Age, years 54 (24-91)
Menstrual status
  Peri/pre-menopause 98 32.9
  Post-menopause 200 67.1
Breast surgery type
  Mastectomy (+/-reconstruction) 259 86.9
  Lumpectomy 39 13.1
Tumor size
  Tx 7 2.3
  ≤2 cm 123 41.3
  2-5 cm 160 53.7
  >5 cm 8 2.7
Axillary lymph node
  Negative 165 55.4
  1-3 + 76 25.5
  ≥4+ 55 18.5
  Nx 2 0.7