Table 1 Demographic and tumor characteristics
Characteristic | Number of patients | Percentage (%) |
|---|---|---|
N | 1189 | 100 |
Age (year) | ||
< 40 | 54 | 4.54 |
40–49 | 176 | 14.80 |
50–59 | 348 | 29.27 |
60–69 | 343 | 28.85 |
≥ 70 | 268 | 22.54 |
Mean of age (year) | 59.88 | |
Median of age (year, range) | 60.00 (26–85) | |
Race | ||
White | 942 | 79.23 |
Black | 139 | 11.69 |
Asian or Pacific Islander | 95 | 7.99 |
American Indian/Alaska Native | 9 | 0.76 |
Unknown/other | 4 | 0.34 |
Marital status | ||
Not married | 449 | 37.76 |
Married | 699 | 58.79 |
Unknown | 41 | 3.45 |
Grade | ||
I/II | 65 | 5.47 |
III | 223 | 18.76 |
IV | 10 | 0.84 |
Unknown | 891 | 74.94 |
Laterality | ||
Right | 565 | 47.52 |
Left | 624 | 52.48 |
Histology | ||
Ductal carcinoma | 476 | 40.03 |
Lobular carcinoma | 54 | 4.54 |
Mixed type | 25 | 2.10 |
Other | 634 | 53.32 |
N | ||
N1mi | 31 | 2.61 |
N1 | 721 | 60.64 |
N2 | 228 | 19.18 |
N3 | 209 | 17.58 |
No. of examined LN | ||
1–3 | 182 | 15.31 |
4–9 | 177 | 14.89 |
≥ 10 | 675 | 56.77 |
Other/unknown | 155 | 13.04 |
No. of positive LN | ||
1–3 | 615 | 51.72 |
4–9 | 212 | 17.83 |
≥ 10 | 148 | 12.45 |
Other/unknown | 214 | 18.00 |
Stage | ||
IB | 31 | 2.61 |
IIA | 722 | 60.72 |
IIIA | 228 | 19.18 |
IIIC | 208 | 17.49 |
Surgery | ||
BCS | 120 | 10.09 |
Mastectomy | 422 | 35.49 |
None/unknown | 647 | 54.42 |
Radiation | ||
Yes | 688 | 57.86 |
None/unknown | 501 | 42.13 |
Chemotherapy | ||
Yes | 929 | 78.13 |
No/unknown | 260 | 21.87 |
Type of systemic therapy | ||
Neoadjuvant | 118 | 9.92 |
Adjuvant | 583 | 49.03 |
Neoadjuvant + adjuvant | 104 | 8.75 |
Only systemic therapy, no surgery | 28 | 2.35 |
Other | 190 | 15.98 |
No/unknown | 166 | 13.96 |
Subtypes | ||
Luminal A | 326 | 27.42 |
Luminal B | 111 | 9.34 |
HER2 positive | 74 | 6.22 |
Triple negative | 148 | 12.45 |
Unknown | 530 | 44.58 |
ER | ||
Negative | 414 | 34.82 |
Borderline/unknown | 100 | 8.41 |
Positive | 675 | 56.77 |
PR | ||
Negative | 598 | 50.29 |
Borderline/unknown | 126 | 10.60 |
Positive | 465 | 39.11 |
HER2 | ||
Negative | 474 | 39.87 |
Positive | 187 | 15.73 |
Unknown | 528 | 44.41 |
Vital status | ||
Alive | 917 | 77.12 |
Dead | 272 | 22.88 |