Table 1 Demographic information
Characteristics | Cases (%) | Controls (%) | P value | |
|---|---|---|---|---|
Number | 434 | 700 | ||
Age (mean ± SD) | 51.95 ± 10.35 | 51.83 ± 17.28 | 0.879a | |
≦49 | 180 (41.5) | 298 (42.6) | ||
>49 | 254 (58.5) | 402 (57.4) | 0.716 | |
BMI, kg/m2 (mean ± SD) | 22.38 ± 2.61 | 22.71 ± 4.00 | 0.084a | |
Menopausal status | ||||
Premenopausal | 157 (36.2) | 188 (41.8) | ||
Postmenopausal | 277 (63.8) | 262 (58.2) | 0.506 | |
TNM Stage | ||||
 I | 114 (26.3) | – | – | |
 II | 192 (44.2) | – | ||
 III | 89 (20.5) | – | – | |
 IV | 39 (9) | – | – | |
Immunohistochemistry results | ||||
 ER | – | 142 (32.7) | – | – |
+ | 292 (67.3) | – | – | |
 PR | – | 189 (43.5) | – | – |
+ | 245 (56.5) | – | – | |
 Her-2 | – | 250 (57.6) | – | – |
+ | 184 (42.4) | – | – | |