Characteristics | Total patients | Relative frequency | p value |
---|---|---|---|
Age at diagnosis | Â | Â | Â |
 Mean ± SD | 46.67 ± 9.03 |  |  |
 < 46 | 99 | 56.3 |  |
 ≥ 46 | 77 | 43.8 | 0.097 |
Menopausal status | Â | Â | Â |
 Premenopausal | 116 | 65.5 |  |
 Postmenopausal | 61 | 34.5 | < 0.001 |
Estrogen receptor | Â | Â | Â |
 Positive | 131 | 86.2 |  |
 Negative | 21 | 13.8 | < 0.001 |
Progesterone receptor | Â | Â | Â |
 Positive | 128 | 84.8 |  |
 Negative | 23 | 15.2 | < 0.001 |
Human epidermal growth factor receptor 2 | Â | Â | Â |
 Positive | 27 | 18.1 |  |
 Negative | 122 | 81.9 | < 0.001 |
Vascular invasion | Â | Â | Â |
 Positive | 94 | 81 |  |
 Negative | 22 | 19 | < 0.001 |
Axillary lymph node metastasis | Â | Â | Â |
 Positive | 99 | 64.3 |  |
 Negative | 55 | 35.7 | < 0.001 |
Grade | Â | Â | Â |
 I | 24 | 16.4 |  |
 II | 107 | 73.3 |  |
 III | 15 | 10.3 | < 0.001 |
BMI at diagnosis | Â | Â | Â |
 Normal | 26 | 16 |  |
 Overweight | 79 | 48.5 |  |
 Obese | 58 | 35.6 | < 0.001 |
Oral contraceptive use | Â | Â | Â |
 Yes | 40 | 22.7 |  |
 No | 136 | 77.3 | < 0.001 |