Table 3 Relationship between types of residual tumor and expression of ER a , PR a and HER2 b
Types | No. of ER (%) prior to NCT | No. of ER (%) after NCT | ||||||
|---|---|---|---|---|---|---|---|---|
|  | - | + to about +++ | χ 2 | P value | - | + to about +++ | χ 2 | P value |
Type I | 21 (38.2) | 34 (61.8) | 2.032 | 0.362 | 22 (40.0) | 33 (60.0) | 0.378 | 0.828 |
Type II | 7 (23.3) | 23 (76.7) | 10 (33.3) | 20 (66.7) | ||||
Type III | 2 (40.0) | 3 (60.0) | 2 (40.0) | 3 (60.0) | ||||
| Â | No. of PR (%) prior to NCT | No. of PR (%) after NCT | ||||||
|  | - | + to about +++ | χ 2 | P value | - | + to about +++ | χ 2 | P value |
Type I | 13 (23.6) | 42 (76.4) | 0.499 | 0.779 | 13 (23.6) | 42 (76.4) | 0.153 | 0.926 |
Type II | 9 (30.0) | 21 (70.0) | 8 (26.7) | 22 (73.3) | ||||
Type III | 1 (20.0) | 4 (80.0) | 1 (20.0) | 4 (80.0) | ||||
| Â | No. of HER2 (%) before NCT | No. of HER2 (%) after NCT | ||||||
|  | – to about + | ++ to about ++++ | χ 2 | P value | – to about + | ++ to about +++ | χ 2 | P value |
Type I | 32 (58.2) | 23 (41.8) | 0.743 | 0.154 | 39 (70.9) | 16 (29.1) | 1.142 | 0.565 |
Type II | 24 (80.0) | 6 (20.0) | 24 (80.0) | 6 (20.0) | ||||
Type III | 4 (80.0) | 1 (20.0) | 4 (80.0) | 1 (20.0) | ||||