Table 1.
Basic characteristics of breast cancer patients
| Variables | Total | Surgery | P | |
|---|---|---|---|---|
| Yes | No | |||
| N, n (%) | 44 299 | 38 471 (86.84) | 5828 (13.16) | |
| Age, mean ± SD | 53.35 ± 12.25 | 53.34 ± 12.27 | 52.46 ± 12.16 | < 0.001 |
| Age, n (%) | < 0.001 | |||
| < 40 | 5538 (12.50) | 4711 (85.07) | 827 (14.93) | |
| 40‐ | 13 150 (29.68) | 11 454 (87.1) | 1696 (12.9) | |
| 50‐ | 13 096 (29.56) | 11 295 (86.25) | 1801 (13.75) | |
| 60‐ | 7435 (16.78) | 6489 (87.28) | 946 (12.72) | |
| 70‐ | 4166 (9.40) | 3710 (89.05) | 456 (10.95) | |
| ≥ 80 | 914 (2.06) | 812 (88.84) | 102 (11.16) | |
| Marital status, n (%) | 0.081 | |||
| Single | 783 (1.77) | 662 (1.72) | 121 (2.08) | |
| Married | 42 953 (96.96) | 37 309 (96.98) | 5644 (96.84) | |
| Divorced | 244 (0.55) | 221 (0.57) | 23 (0.39) | |
| Widowed | 284 (0.64) | 246 (0.64) | 38 (0.65) | |
| Other | 35 (0.08) | 35 (0.08) | 35 (0.08) | |
| Ethnicity, n (%) | 0.656 | |||
| Han | 43 352 (97.86) | 37 644 (97.85) | 5708 (97.94) | |
| Other | 947 (2.14) | 827 (2.15) | 120 (2.06) | |
| Hypertension, n (%) | < 0.001 | |||
| Yes | 7330 (16.55) | 6475 (16.83) | 855 (14.67) | |
| No | 36 969 (83.45) | 31 996 (83.17) | 4973 (85.33) | |
| Diabetes, n (%) | 0.091 | |||
| Yes | 2973 (6.71) | 2612 (6.79) | 361 (6.19) | |
| No | 41 326 (93.29) | 35 859 (93.21) | 5467 (93.81) | |
| Histological type, n (%) | < 0.001 | |||
| Ductal | 38 396 (86.67) | 4979 (85.43) | 33 417 (86.86) | |
| Lobular | 1312 (2.96) | 144 (2.47) | 1168 (3.04) | |
| Lobular/ductal | 1839 (4.15) | 68 (1.17) | 1771 (4.60) | |
| Mucinous | 231 (0.52) | 31 (0.53) | 200 (0.52) | |
| Medullary | 991 (2.24) | 94 (1.61) | 897 (2.33) | |
| Papillary | 436 (0.98) | 47 (0.81) | 389 (1.01) | |
| Paget's disease | 257 (0.58) | 26 (0.45) | 231 (0.60) | |
| Other | 837 (1.89) | 439 (7.53) | 398 (1.03) | |