Table 1 baseline characteristics
From: A nomogram to predict the high-risk RS in HR+/HER2-breast cancer patients older than 50 years of age
Total N (%) | RS low-risk N (%) | RS high-risk N (%) | P-value | |
|---|---|---|---|---|
Age | 0.001 | |||
Mean ± SD | 63.33 ± 8.38 | 64.13 ± 8.56 | 62.41 ± 8.09 | |
Menstrual status | 0.193 | |||
Pre- | 77 (7.0%) | 47 (8.0%) | 30 (5.9%) | |
Post- | 1023 (93.0%) | 542 (92.0%) | 481 (94.1%) | |
Tumor size | 0.017 | |||
≤ 2 cm | 778 (70.7%) | 435 (73.9%) | 343 (67.1%) | |
> 2 cm | 322 (29.3%) | 154 (26.1%) | 168 (32.9%) | |
Histologic subtype | 0.006 | |||
IDC | 955 (86.8%) | 501 (85.1%) | 454 (88.8%) | |
Mixed | 73 (6.6%) | 52 (8.8%) | 21 (4.1%) | |
Others | 72 (6.5%) | 36 (6.1%) | 36 (7.0%) | |
Tumor grade | < 0.001 | |||
I | 140 (12.7%) | 102 (17.3%) | 38 (7.4%) | |
II | 787 (71.5%) | 428 (72.7%) | 359 (70.3%) | |
III | 173 (15.7%) | 59 (10.0%) | 114 (22.3%) | |
LVI | 0.782 | |||
Yes | 54 (4.9%) | 30 (5.1%) | 24 (4.7%) | |
No | 1046 (95.1%) | 559 (94.9%) | 487 (95.3%) | |
ER status | < 0.001 | |||
Mean ± SD | 89.24 ± 15.07 | 91.79 ± 11.08 | 86.30 ± 18.21 | |
PR status | < 0.001 | |||
Mean ± SD | 47.08 ± 36.80 | 62.29 ± 33.68 | 29.55 ± 32.19 | |
Ki-67 index | < 0.001 | |||
Mean ± SD | 18.97 ± 16.16 | 15.20 ± 12.73 | 23.32 ± 18.45 | |
Luminal subtype | < 0.001 | |||
Luminal-A like | 332 (30.2%) | 257 (43.6%) | 75 (14.7%) | |
Luminal-B like | 768 (69.8%) | 332 (56.4%) | 436 (85.3%) |