Table 1 Clinical and pathological characteristics of all patients grouped as 40 years and > 40 years old
Characteristics | Age (years) | P-value | Total (unknown) | |
|---|---|---|---|---|
|  | ≤ 40 n (%) | > 40 n (%) |  |  |
Node Status | Â | Â | Â | 838 |
   Positive | 159 (57.8) | 320 (56.8) | 0.7878 | (29) |
   Negative | 116 (42.2) | 243 (43.2) |  |  |
Tumor Size | Â | Â | Â | 824 |
   ≤ 2 | 93 (32.3) | 186 (32.1) |  | (43) |
   3 – 5 | 155 (53.8)) | 320 (55.3) | 0.8532 |  |
   ≤ 5 | 40 (13.9) | 73 (12.6) |  |  |
Number of Nodes | Â | Â | Â | 824 |
   0 | 116 (42.3) | 241 (43.1) |  | (43) |
   1 – 3 | 83 (30.3) | 178 (31.8) | 0.6731 |  |
   4 – 10 | 51 (18.6) | 104 (18.6) |  |  |
   > 10 | 24 (8.8) | 36 (6.4) |  |  |
Stage | Â | Â | Â | 762 |
   I | 38 (15.0) | 67 (13.1) |  | (105) |
   II | 170 (67.5) | 347 (68.1) | 0.7259 |  |
   III | 44 (17.5) | 96 (18.8) |  |  |
Grade | Â | Â | Â | 793 |
   I | 7 (2.6) | 38 (7.2) |  | (74) |
   II | 130 (48.9) | 297 (56.4) | 0.0006 |  |
   III | 129 (48.5) | 192 (36.4) |  |  |
Histopathology | Â | Â | Â | 854 |
| Â | Â | Â | Â | (13) |
   Infiltrating ductal | 270 (98.5) | 520 (93.2) | 0.0009 |  |
   Infiltrating lobular | 4 (1.5) | 38 (6.8) |  |  |
Lymph-Vascular Invasion | Â | Â | Â | 702 |
   Both Positive | 84 (36.7) | 159 (33.8) | 0.4459 | (165) |
   Both Negative | 145 (63.3) | 312 (66.2) |  |  |
Hormonal Receptor Status | Â | Â | Â | 677 |
   ER+ PR+ | 99 (44.6) | 252 (55.4) | 0.0086 | (190) |
   ER- PR- | 69 (31.1) | 99 (21.8) |  |  |
   ER+ PR- | 13 (5.9) | 39 (8.6) |  |  |
   ER- PR+ | 41 (18.5) | 65 (14.3) |  |  |