Table 1 Patient characteristics
Variable | Low-risk group (NÂ =Â 160) | Non-low-risk group (NÂ =Â 69) | Total (NÂ =Â 229) |
|---|---|---|---|
 Age, median (range) | 58 (35–82) | 58 (32–79) | 58 (32–82) |
Menopausal status, n (%) | |||
 Premenopausal | 41 (26%) | 23 (33%) | 64 (28%) |
 Peri-menopausal | 5 (3%) | 5 (7%) | 10 (4%) |
 Postmenopausal | 114 (71%) | 41 (59%) | 155 (68%) |
pT stage, n (%) | |||
 T1 | 2 (1%) | 2 (3%) | 4 (2%) |
 T1a | 2 (1%) | - | 2 (1%) |
 T1b | 19 (12%) | 5 (7%) | 24 (10%) |
 T1c | 75 (47%) | 33 (48%) | 108 (47%) |
 T2 | 57 (36%) | 23 (33%) | 80 (35%) |
 T3 | 4 (3%) | 6 (9%) | 10 (4%) |
 Tis | 1 (1%) | - | 1 (0%) |
pN stage, n (%) | |||
 pN0 | 122 (76%) | 19 (28%) | 141 (62%) |
 pN1a | 38 (24%) | 50 (72%) | 88 (38%) |
Histologic type, n (%) | |||
 Invasive ductal carcinoma | 119 (74%) | 56 (81%) | 175 (76%) |
 Invasive lobular carcinoma | 31 (19%) | 9 (13%) | 40 (17%) |
 Other | 10 (6%) | 4 (6%) | 14 (6%) |
Tumor grade (BRE), n (%) | |||
 G 1 | 24 (15%) | 5 (7%) | 29 (13%) |
 G 2 | 124 (78%) | 27 (39%) | 151 (66%) |
 G 3 | 12 (8%) | 37 (54%) | 49 (21%) |
Peritumoral lympho-vascular invasion, n (%) | |||
 No | 153 (96%) | 25 (36%) | 178 (78%) |
 Yes | 7 (4%) | 44 (64%) | 51 (22%) |