Factor | Cases | % | Events | % | p value* | HR | 95% CI** |
---|---|---|---|---|---|---|---|
Age | .012 | ||||||
Up to 35 years old | 47 | 5.24 | 16 | 34.04 | 1.63 | 0.98–2.73 | |
36-69 years old | 677 | 75.47 | 159 | 23.49 | 1.00 | ||
70 and older | 173 | 19.29 | 53 | 30.64 | 1.50 | 1.10–2.04 | |
Tumor size | < 0.001 | ||||||
T1 (up to 2 cm) | 319 | 35.56 | 33 | 10.34 | 1.00 | ||
T2 (2–5 cm) | 348 | 38.80 | 88 | 25.29 | 2.59 | 1.73–3.86 | |
T3 | 105 | 11.71 | 37 | 35.24 | 4.03 | 2.52–6.45 | |
T4 | 125 | 13.94 | 70 | 56.00 | 8.02 | 5.29–12.16 | |
Lymph node status | < 0.001 | ||||||
N0 | 387 | 43.14 | 45 | 11.63 | 1.00 | ||
N1 | 255 | 28.43 | 67 | 26.27 | 2.56 | 1.76–3.74 | |
N2 | 155 | 17.28 | 68 | 43.87 | 4.83 | 3.31–7.04 | |
N3 | 100 | 11.15 | 48 | 48.00 | 5.25 | 3.50–7.90 | |
Stage | < 0.001 | ||||||
I | 223 | 24.86 | 13 | 5.83 | 1.00 | ||
II | 315 | 35.12 | 58 | 18.41 | 3.34 | 1.83–6.10 | |
III | 359 | 40.02 | 157 | 43.73 | 9.84 | 5.58–17.33 | |
Bilateral breast cancer | 0.380 | ||||||
Yes | 29 | 3.23 | 10 | 34.48 | 1.33 | 0.70–2.50 | |
No | 868 | 96.77 | 218 | 25.12 | 1.00 | ||
Histologic grade | < 0.001 | ||||||
Grade 1 | 181 | 20.18 | 23 | 12.71 | 1.00 | ||
Grade 2 | 385 | 42.92 | 77 | 20.00 | 1.71 | 1.07–2.72 | |
Grade 3 | 320 | 35.67 | 124 | 38.75 | 3.72 | 2.38–5.80 | |
Unknown | 11 | 1.23 | 4 | 36.36 | |||
Pathology | 0.00 | .449 | |||||
Invasive ductal carcinoma | 760 | 84.73 | 199 | 26.18 | 1.00 | ||
Invasive lobular carcinoma | 79 | 8.81 | 15 | 18.99 | 0.73 | 0.43–1.23 | |
Other | 58 | 6.47 | 14 | 24.14 | 0.86 | 0.50–1.48 | |
Public health system | 0.006 | ||||||
Yes | 823 | 91.75 | 216 | 26.25 | 2.22 | 1.24–3.98 | |
No | 74 | 8.25 | 12 | 16.22 | 1.00 | ||
Neoadjuvant therapy | <0.001 | ||||||
Yes | 166 | 18.51 | 77 | 46.39 | 2.87 | 2.18–3.78 | |
No | 731 | 81.49 | 151 | 20.66 | 1.00 | ||
Axillary node dissection | <0.001 | ||||||
Yes | 684 | 76.25 | 211 | 30.85 | 3.82 | 2.33–6.27 | |
No | 213 | 23.75 | 17 | 7.98 | 1.00 | ||
Type of surgery | <0.001 | ||||||
Mastectomy | 537 | 59.87 | 182 | 33.89 | 2.89 | 2.09–4.00 | |
Breast-conserving surgery | 360 | 40.13 | 46 | 12.78 | 1.00 |