Table 3 Profile of patients with early breast cancer on the basis of menstrual status.
Characteristics | N | Postmenopausal n (%) | Premenopausal n (%) | p-value |
|---|---|---|---|---|
Primary side | 3373 | 0.243 | ||
Left | 1047 (52) | 671 (50) | ||
Right | 976 (48) | 679 (50) | ||
Breast p stage | 3324 | 0.004 | ||
I | 263 (13) | 128 (10) | ||
IIA | 829 (41) | 525 (40) | ||
IIB | 514 (26) | 349 (26) | ||
IIIA | 235 (12) | 187 (14) | ||
IIIC | 162 (8) | 132 (10) | ||
Tumour grade | 3242 | <0.001 | ||
1 | 216 (11) | 79 (6) | ||
2 | 992 (51) | 616 (48) | ||
3 | 746 (38) | 593 (46) | ||
Lymphatic invasion | 3175 | 0.351 | ||
No | 1310 (68) | 842 (67) | ||
Yes | 605 (32) | 418 (33) | ||
Lymph nodes | 3377 | 0.03 | ||
Negative | 1085 (54) | 672 (50) | ||
Positive | 941 (46) | 679 (50) | ||
Receptor subgroups | 3129 | <0.001 | ||
ER/PR + HER2− | 1106 (59) | 610 (48) | ||
ER/PR + /− HER2+ | 386 (21) | 264 (21) | ||
Triple negative | 375 (20) | 388 (31) |
