Table 1. The characteristics of 139611 patients with resectable breast cancer.
ER: Estrogen receptor; HoR: Hormone receptor; PR: prognosis receptor; IDC: Infiltrating duct carcinoma; and MBC: mucinous breast cancer.
| Risk Factors | n (%) | IDC, n (%) | MBC, n (%) | P * |
|---|---|---|---|---|
| Total | 139611 | 136569(97.82) | 3042(2.18) | |
| Age | <0.001 | |||
| Younger | 115213 | 113163(82.86) | 2050(67.39) | |
| Older | 24398 | 23406(17.14) | 992(32.61) | |
| Marital status | ||||
| Married | 87769 | 86038(63.00) | 1731(56.90) | <0.001 |
| Single | 17613 | 17210(12.60) | 403(13.25) | |
| Divorced | 34229 | 33321(24.40) | 908(29.85) | |
| Race | ||||
| White | 114544 | 112092(82.08) | 2452(80.60) | <0.001 |
| Black | 12886 | 12656(9.27) | 230(7.56) | |
| Other | 12181 | 11821(8.66) | 360(11.83) | |
| Location | <0.001 | |||
| Central portion of breast | 11403 | 11051(8.09) | 352(11.57) | |
| Upper-inner quadrant | 23561 | 23054(16.88) | 507(16.67) | |
| Lower-inner quadrant | 12292 | 11844(8.67) | 448(14.73) | |
| Upper-outer quadrant | 77704 | 76391(55.94) | 1313(43.16) | |
| Lower-outer quadrant | 14651 | 14229(10.42) | 422(13.87) | |
| Differentiated grade | ||||
| Well | 25570 | 23758(17.40) | 1812(59.57) | <0.001 |
| Moderate | 57856 | 56792(41.58) | 1064(34.98) | |
| Poor | 56185 | 56019(41.02) | 166(5.46) | |
| T-classification | ||||
| T1 | 90953 | 88742(64.98) | 2211(72.68) | |
| T2 | 41656 | 40925(29.97) | 731(24.03) | |
| T3 | 4798 | 4709(3.45) | 89(2.93) | <0.001 |
| T4 | 2204 | 2193(1.61) | 11(0.36) | |
| N-classification | ||||
| N0 | 91896 | 89163(65.29) | 2733(89.84) | |
| N1 | 33160 | 32908(24.10) | 252(8.28) | |
| N2 | 9906 | 9862(7.22) | 44(1.45) | |
| N3 | 4649 | 4636(3.39) | 13(0.43) | <0.001 |
| Stage a | ||||
| I | 70018 | 67933(49.74) | 2085(68.54) | |
| II | 52219 | 51349(37.60) | 870(28.60) | |
| III | 17374 | 17287(12.66) | 87(2.86) | |
| ER | <0.001 | |||
| Negative | 34915 | 34816(25.49) | 99(3.25) | |
| Positive | 104696 | 101753(74.51) | 2943(96.75) | |
| PR | <0.001 | |||
| Negative | 48284 | 47813(35.01) | 471(15.48) | |
| Positive | 91327 | 88756(64.99) | 2571(84.52) | |
| HoR | <0.001 | |||
| Negative | 31916 | 31829(23.31) | 87(2.86) | |
| Positive | 107695 | 104740(76.69) | 2955(97.14) |
* P values obtained from the χ2 test. All statistical tests were two-sided.