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Table 1 Patient characteristics

From: Distant metastasis dynamics following subsequent surgeries after primary breast cancer removal

  IBTR (338) CBC (239) Rec (312) Controls (312)
Median age at diagnosis (years) 45 48 48 49
25%–75% 39–52 42–56 42–53 43–53
Range 21–69 22–75 29–73 28–71
Tumour size (%)
 T1 85 84 61 62
 T2 12 15 29 30
 T3/4 8 7
 Missing 3 1 2 1
Node negative (%) 70 64 68 67
Node positive (%) 30 36 32 33
ER negative (%) 16 16 20 19
ER positive (%) 63 53 70 70
ER missing (%) 21 31 10 11