Characteristic | Localized (n = 148) | Regional/metastatic (n = 152) | P | |
---|---|---|---|---|
Age at diagnosis | <50 years | 44 (30.1%) | 57 (37.0%) | 0.0042a |
 | ≥50 years | 102 (69.9%) | 97 (63.0%) |  |
 | Mean age (years; mean ± SD) | 59.7 ± 14.3 | 55.2 ± 12.6 |  |
 | Range (years) | 33–91 | 25–87 |  |
ER status | Positive | 109 (74.7%) | 105 (68.2%) | 0.1741b |
 | Negative | 22 (15.0%) | 33 (21.4%) |  |
 | Unknown | 15 (10.3%) | 16 (10.4%) |  |
PR status | Positive | 96 (65.7%) | 87 (56.5%) | 0.0489b |
 | Negative | 33 (22.7%) | 451 (33.1%) |  |
 | Unknown | 17 (11.6%) | 16 (10.4%) |  |
Tumor size | < 2 cm | 102 (69.9%) | 55 (35.7%) | <0.0001c |
 | ≥ 2 cm | 34 (27.4%) | 84 (54.6%) |  |
 | Unknown | 4 (2.7%) | 15 (9.7%) |  |
 | Mean size (cm; mean ± SD) | 1.6 ± 1.0 | 3.1 ± 2.7 |  |
 | Range (cm) | 0.1–6.5 | 0.4–18.0 |  |
Grade | Well to moderate | 86 (58.9%) | 46 (29.9%) | <0.0001b |
 | Poor | 26 (17.8%) | 79 (51.3%) |  |
 | Unknown | 34 (23.3%) | 29 (18.8%) |  |