| Patients | BCRP expression | P value | ||
---|---|---|---|---|---|
 | n (%) | negative | low | high |  |
Age | Â | Â | Â | Â | 0.801 |
   ≤ 50 years | 80 | 10 | 38 | 32 |  |
   > 50 years | 116 | 16 | 59 | 41 |  |
Histology-type | Â | Â | Â | Â | 0.711 |
   IDC | 155 | 20 | 75 | 60 |  |
   IDC with others | 41 | 6 | 22 | 13 |  |
Histology-grade | Â | Â | Â | Â | 0.424 |
   G1/G2 | 143 | 19 | 67 | 57 |  |
   G3 | 53 | 7 | 30 | 16 |  |
Tumour size | Â | Â | Â | Â | 0.210 |
   ≤ 2.0 cm | 97 | 9 | 48 | 40 |  |
   > 2.0 cm | 99 | 17 | 49 | 33 |  |
LNM | Â | Â | Â | Â | 0.049* |
   - | 103 | 8 | 56 | 39 |  |
   + | 93 | 18 | 41 | 34 |  |
ER | Â | Â | Â | Â | 0.136 |
   -/+ | 96 | 14 | 53 | 29 |  |
   ++/+++ | 100 | 12 | 44 | 44 |  |
PR | Â | Â | Â | Â | 0.693 |
   -/+ | 128 | 18 | 65 | 45 |  |
   ++/+++ | 68 | 8 | 32 | 28 |  |
HER2 | Â | Â | Â | Â | 0.001* |
   -/+ | 138 | 18 | 57 | 63 |  |
   ++/+++ | 58 | 8 | 40 | 10 |  |
Ki67 | Â | Â | Â | Â | 0.906 |
   Positive ≤ 50% | 154 | 21 | 75 | 58 |  |
   Positive > 50% | 42 | 5 | 22 | 15 |  |
Clinical stage | Â | Â | Â | Â | 0.015* |
   Stage I | 60 | 2 | 32 | 26 |  |
   Stage IIa and IIb | 86 | 11 | 44 | 31 |  |
   StageIIIa and IIIb | 50 | 13 | 21 | 16 |  |