Table 1 Baseline characteristics of patients with cT1 triple-negative breast cancer.
From: Evaluation of neoadjuvant chemotherapy for clinical T1 triple-negative breast cancer
Characteristics | Before PSM | After PSM | ||||
|---|---|---|---|---|---|---|
AC (n = 5404) | NAC (n = 845) | P value | AC (n = 818) | NAC (n = 818) | P value | |
Age | < 0.001 | 0.513 | ||||
< 50 | 1460 (27.0%) | 358 (42.4%) | 328 (40.1%) | 342 (41.8%) | ||
≥ 50 | 3944 (73.0) | 487 (57.6) | 490 (59.9%) | 476 (58.2%) | ||
Race | 0.977 | 0.880 | ||||
White | 4035 (74.7%) | 628 (74.3%) | 610 (74.6%) | 612 (74.8%) | ||
Black | 952 (17.6%) | 151 (17.9%) | 148 (18.1%) | 142 (17.4%) | ||
Other | 417 (7.7%) | 66 (7.8%) | 60 (7.3%) | 64 ( 7.8%) | ||
Marital Status | 0.693 | 0.876 | ||||
Married | 3508 (64.9%) | 555 (65.7%) | 542 (66.3%) | 538 (65.8%) | ||
Not married | 1896 (35.1%) | 290 (34.3%) | 276 (33.7%) | 280 (34.2%) | ||
Histology | 0.096 | 0.816 | ||||
Ductal | 4837 (89.5%) | 776 (91.8%) | 760 (92.9%) | 753 (92.1%) | ||
Ductal/lobular | 50 (0.9%) | 8 (0.9%) | 5 (0.6%) | 6 (0.7%) | ||
Lobular | 28 (0.5%) | 6 (0.7%) | 2 (0.2%) | 4 (0.5%) | ||
Other | 489 (9.0%) | 55 (6.5%) | 51 (6.2%) | 55 (6.7%) | ||
Grade | 0.201 | 0.207 | ||||
I | 82 (1.5%) | 7 (0.8%) | 1 ( 0.1%) | 7 ( 0.9%) | ||
II | 976 (18.1%) | 157 (18.6%) | 154 (18.8%) | 150 (18.3%) | ||
III | 4317 (79.9%) | 673 (79.6%) | 658 (80.4%) | 656 (80.2%) | ||
IV | 29 (0.5%) | 8 (0.9%) | 5 (0.6%) | 5 (0.6%) | ||
T stage | < 0.001 | 0.821 | ||||
T1a | 191 (3.5%) | 42 (5.0%) | 34 (4.2%) | 39 (4.8%) | ||
T1b | 1197 (22.2%) | 135 (16.0%) | 126 (15.4%) | 128 (15.6%) | ||
T1c | 4016 (74.3%) | 668 (79.1%) | 658 (80.4%) | 651 (79.6%) | ||
N Stage | < 0.001 | 0.846 | ||||
N0 | 4373 (80.9%) | 496 (58.7%) | 487 (59.5%) | 496 (60.6%) | ||
N1 | 831 (15.4%) | 265 (31.4%) | 251 (30.7%) | 248 (30.3%) | ||
N2–N3 | 200 (3.7%) | 84 (9.9%) | 80 (9.8%) | 74 (9.0%) | ||
Surgery | < 0.001 | 0.961 | ||||
BCS | 3699 (68.4%) | 400 (47.3%) | 401 (49.0%) | 399 (48.8%) | ||
Mastectomy | 1705 (31.6%) | 445 (52.7%) | 417 (51.0%) | 419 (51.2%) | ||
Radiotherapy | 0.418 | 0.728 | ||||
None/unknown | 2257 (41.8%) | 366 (43.3%) | 372 (45.5%) | 364 (44.5%) | ||
Yes | 3147 (58.2%) | 479 (56.7%) | 446 (54.5%) | 454 (55.5%) | ||
