Table 1

Patient and breast cancer characteristics
Study population Ineligible population p value
n=116 n=41
Number (%) Number (%)
Age at diagnosis
  Median (yrs) 50 50
  Range (31–85) (34–73)
Year breast cancer diagnosis
  Pre - 2000 26 (22) 20 (49)
  2000–2001 19 (16) 6 (15) 0.01
  2002–2003 29 (25) 3 (8)
  2004–2005 21 (18) 9 (23)
  2006–2007 16 (14) 2 (5)
  2008-2009 5 (4) 1 (3)
Disease interval to biopsy (yrs)
  0 (metastatic at diagnosis) 9 (8) 5 (12)
  0.5 – 2y 29 (25) 2 (5) 0.02
  2.1 – 5 44 (38) 14 (34)
  >5y 34 (29) 20 (49)
Type of biopsy
  Local recurrence site 40 (34) 7 (17) 0.05
  Distant recurrence site 76 (66) 34 (83)
Site of recurrent or metastatic biopsy
  Breast 24 (20) 3 (7)
  Lymph nodes 20 (17) 10 (24)
  Chest wall / Skin 18 (16) 4 (10) 0.13
  Bone 14 (12) 9 (22)
  Liver 9 (8) 5 (12)
  Brain 9 (8) 2 (5)
  Lung 7 (6) 0
  Others 15 (13) 8 (20)
Type of tissue biopsy
  Fine needle aspiration 34 (29) 13 (32) 0.84
  Core / Excisional biopsy 82 (71) 28 (68)

Chan et al.

Chan et al. BMC Cancer 2012 12:555   doi:10.1186/1471-2407-12-555

Open Data