Characteristics | Training set(n = 155) | p | Validation set(n = 56) | p | ||
---|---|---|---|---|---|---|
Non-pCR(n = 94) | pCR(n = 61) |  | Non-pCR(n = 35) | pCR(n = 21) |  | |
Age | 49.5(45.2,55.8) | 49.0(46.0,54.0) | 0.437 | 52.3 ± 9.63 | 50.3 ± 9.26 | 0.623 |
T stage (%) | Â | Â | 0.149 | Â | Â | 0.420 |
 T1 | 4 (4.26) | 3 (4.92) |  | 3 (8.57) | 0 (0.00) |  |
 T2 | 64 (68.1) | 47 (77.0) |  | 23 (65.7) | 18 (85.7) |  |
 T3 | 10 (10.6) | 8 (13.1) |  | 5 (14.3) | 2 (9.52) |  |
 T4 | 16 (17.0) | 3 (4.92) |  | 4 (11.4) | 1 (4.76) |  |
N stage (%) | Â | Â | 0.076 | Â | Â | 0.946 |
 N0 | 28 (29.8) | 13 (21.3) |  | 9 (25.7) | 5 (23.8) |  |
 N1 | 50 (53.2) | 44 (72.1) |  | 17 (48.6) | 12 (57.1) |  |
 N2 | 13 (13.8) | 4 (6.56) |  | 6 (17.1) | 2 (9.52) |  |
 N3 | 3 (3.19) | 0 (0.00) |  | 3 (8.57) | 2 (9.52) |  |
ER status (%) | Â | Â | 0.03 | Â | Â | 0.128 |
 Negative | 39 (41.5) | 37 (60.7) |  | 13 (37.1) | 13 (61.9) |  |
 Positive | 55 (58.5) | 24 (39.3) |  | 22 (62.9) | 8 (38.1) |  |
PR status (%) | Â | Â | 0.047 | Â | Â | 0.448 |
 Negative | 30 (31.9) | 30 (49.2) |  | 15 (42.9) | 12 (57.1) |  |
 Positive | 64 (68.1) | 31 (50.8) |  | 20 (57.1) | 9 (42.9) |  |
HER2 status (%) |  |  |  < 0.001 |  |  | 0.001 |
 Negative | 69 (73.4) | 22 (36.1) |  | 25 (71.4) | 5 (23.8) |  |
 Positive | 25 (26.6) | 39 (63.9) |  | 10 (28.6) | 16 (76.2) |  |
Ki-67 status (%) | Â | Â | 0.238 | Â | Â | 1.000 |
  < 30% | 26 (27.7) | 11 (18.0) |  | 8 (22.9) | 5 (23.8) |  |
  ≥ 30% | 68 (72.3) | 50 (82.0) |  | 27 (77.1) | 16 (76.2) |  |