Introduction
Materials and methods
Data source and study population
Statistical analysis
Results
The trend of BCT and non-BCT among central breast cancer and relevant clinical characteristics
BCT group | Non-BCT group | P-value | |||
---|---|---|---|---|---|
No | % | No | % | ||
Years at diagnosis | < 0.001 | ||||
2010 | 570 | 14.70 | 859 | 17.80 | |
2011 | 598 | 15.50 | 745 | 15.40 | |
2012 | 627 | 16.20 | 868 | 18.00 | |
2013 | 619 | 16.00 | 836 | 17.30 | |
2014 | 681 | 17.60 | 779 | 16.10 | |
2015 | 775 | 20.00 | 745 | 15.40 | |
Age | < 0.001 | ||||
< 45 | 249 | 6.40 | 717 | 14.80 | |
45–59 | 1331 | 34.40 | 1861 | 38.50 | |
60–79 | 2290 | 59.20 | 2254 | 46.60 | |
Race | < 0.001 | ||||
White | 3165 | 81.80 | 3711 | 76.80 | |
Black | 349 | 9.00 | 474 | 9.80 | |
Others | 356 | 9.20 | 647 | 13.40 | |
Marital | 0.439 | ||||
Married | 2370 | 61.20 | 2911 | 60.20 | |
Single | 577 | 14.90 | 767 | 15.90 | |
Divorced | 923 | 23.90 | 1154 | 23.90 | |
Grade | < 0.001 | ||||
Grade I | 1037 | 26.80 | 780 | 16.10 | |
Grade II | 1908 | 49.30 | 2343 | 48.50 | |
Grade III | 918 | 23.70 | 1692 | 35.00 | |
Grade IV | 7 | 0.20 | 17 | 0.40 | |
Stage | < 0.001 | ||||
Stage I | 2218 | 57.30 | 1311 | 27.10 | |
Stage II | 1439 | 37.20 | 2198 | 45.50 | |
Stage III | 213 | 5.50 | 1323 | 27.40 | |
T stage | < 0.001 | ||||
T1 | 2766 | 71.50 | 1924 | 39.80 | |
T2 | 971 | 25.10 | 1961 | 40.60 | |
T3 | 79 | 2.00 | 598 | 12.40 | |
T4 | 54 | 1.40 | 349 | 7.20 | |
N stage | < 0.001 | ||||
N0 | 2810 | 72.60 | 2266 | 46.90 | |
N1 | 917 | 23.70 | 1687 | 34.90 | |
N2 | 107 | 2.80 | 560 | 11.60 | |
N3 | 36 | 0.90 | 319 | 6.60 | |
ER status | < 0.001 | ||||
Negative | 434 | 11.20 | 742 | 15.40 | |
Positive | 3436 | 88.80 | 4090 | 84.60 | |
PR status | < 0.001 | ||||
Negative | 800 | 20.70 | 1263 | 26.10 | |
Positive | 3070 | 79.30 | 3569 | 73.90 | |
HER-2 status | < 0.001 | ||||
Negative | 3350 | 86.60 | 3889 | 80.50 | |
Positive | 520 | 13.40 | 943 | 19.50 |
Predictive factors of BCT among central breast cancer
Factor | OR | 95%CI | P-value |
---|---|---|---|
Age | < 0.001 | ||
< 45 | 1 | Reference | |
45–59 | 2.026 | 1.706–2.405 | < 0.001 |
60–79 | 2.581 | 2.182–3.053 | < 0.001 |
Race | < 0.001 | ||
White | 1 | Reference | |
Black | 1.030 | 0.874–1.213 | 0.725 |
Others | 0.680 | 0.585–0.79 | < 0.001 |
Marital | 0.059 | ||
Married | 1 | Reference | |
Single | 1.146 | 1.001–1.313 | 0.049 |
Divorced | 0.952 | 0.850–1.067 | 0.4 |
Year of diagnosis | 1.076 | 1.048–1.106 | < 0.001 |
Grade | 0.014 | ||
Grade I | 1 | Reference | |
Grade II | 0.843 | 0.747–0.951 | 0.005 |
Grade III | 0.819 | 0.707–0.949 | 0.008 |
Grade IV | 0.477 | 0.182–1.251 | 0.132 |
T stage | < 0.001 | ||
T1 | 1 | Reference | |
T2 | 0.447 | 0.402–0.496 | < 0.001 |
T3 | 0.152 | 0.118–0.195 | < 0.001 |
T4 | 0.182 | 0.134–0.247 | < 0.001 |
N stage | < 0.001 | ||
N0 | 1 | Reference | |
N1 | 0.634 | 0.57–0.706 | < 0.001 |
N2 | 0.304 | 0.242–0.381 | < 0.001 |
N3 | 0.216 | 0.150–0.311 | < 0.001 |
ER status | 0.987 | ||
Negative | 1 | Reference | |
Positive | 1.002 | 0.829–1.209 | 0.987 |
PR status | 0.082 | ||
Negative | 1 | Reference | |
Positive | 1.141 | 0.984–1.323 | 0.082 |
HER-2 status | 0.004 | ||
Negative | 1 | Reference | |
Positive | 0.822 | 0.719–0.94 | 0.004 |
Survival significance of BCT among central breast cancer
Univariate analysis | Multivariate analysis | |||
---|---|---|---|---|
HR (95%CI) | P-value | HR (95%CI) | P-value | |
Surgery type | < 0.001 | < 0.001 | ||
Non-BCT | Reference | |||
BCT | 0.396 (0.332–0.473) | < 0.001 | 0.633 (0.522–0.766) | < 0.001 |
Age | < 0.001 | < 0.001 | ||
< 45 | Reference | Reference | ||
45–59 | 1.029 (0.769–1.378) | 0.846 | 1.188 (0.885–1.595) | 0.252 |
60–79 | 1.581 (1.201–2.080) | 0.001 | 2.012 (1.518–2.668) | < 0.001 |
Race | < 0.001 | < 0.001 | ||
White | Reference | Reference | ||
Black | 1.922 (1.568–2.356) | < 0.001 | 1.509 (1.222–1.864) | < 0.001 |
Others | 0.630 (0.466–0.851) | 0.003 | 0.566 (0.418–0.767) | < 0.001 |
Marital | < 0.001 | < 0.001 | ||
Married | Reference | Reference | ||
Single | 1.596 (1.301–1.959) | < 0.001 | 1.366 (1.106–1.686) | 0.004 |
Divorced | 1.829 (1.544–2.166) | < 0.001 | 1.465 (1.231–1.742) | < 0.001 |
Year of diagnosis | 0.929 (0.877–0.984) | 0.012 | 0.941 (0.888–0.997) | 0.038 |
Grade | < 0.001 | < 0.001 | ||
Grade I | Reference | Reference | ||
Grade II | 1.392 (1.081–1.793) | 0.01 | 1.025 (0.792–1.326) | 0.85 |
Grade III | 3.189 (2.497–4.071) | < 0.001 | 1.581 (1.211–2.065) | 0.001 |
Grade IV | 4.950 (2.004–12.224) | 0.001 | 2.438 (0.977–6.08) | 0.056 |
T stage | < 0.001 | < 0.001 | ||
T1 | Reference | Reference | ||
T2 | 2.288 (1.906–2.747) | < 0.001 | 1.48 (1.214–1.805) | < 0.001 |
T3 | 4.055 (3.208–5.126) | < 0.001 | 1.947 (1.498–2.529) | < 0.001 |
T4 | 6.933 (5.452–8.817) | < 0.001 | 2.845 (2.169–3.731) | < 0.001 |
N stage | < 0.001 | < 0.001 | ||
N0 | Reference | Reference | ||
N1 | 1.83 (1.525–2.195) | < 0.001 | 1.461 (1.205–1.772) | < 0.001 |
N2 | 3.999 (3.214–4.976) | < 0.001 | 2.482 (1.956–3.149) | < 0.001 |
N3 | 6.087 (4.802–7.716) | < 0.001 | 3.180 (2.443–4.140) | < 0.001 |
ER status | < 0.001 | 0.003 | ||
Negative | Reference | Reference | ||
Positive | 0.362 (0.307–0.427) | < 0.001 | 0.692 (0.544–0.880) | 0.003 |
PR status | < 0.001 | < 0.001 | ||
Negative | Reference | Reference | ||
Positive | 0.407 (0.350–0.475) | < 0.001 | 0.666 (0.536–0.828) | < 0.001 |
HER-2 status | 0.004 | 0.039 | ||
Negative | Reference | Reference | ||
Positive | 1.318 (1.094–1.588) | 0.004 | 0.813 (0.668–0.989) | 0.039 |
Univariate analysis | Multivariate analysis | |||
---|---|---|---|---|
HR (95%CI) | P-value | HR (95%CI) | P-value | |
Surgery type | < 0.001 | < 0.001 | ||
Non-BCT | Reference | Reference | ||
BCT | 0.266 (0.206–0.342) | < 0.001 | 0.570 (0.435–0.746) | < 0.001 |
Age | < 0.001 | 0.894 | ||
< 45 | Reference | Reference | ||
45–59 | 1.131 (0.843–1.518) | 0.411 | 1.075 (0.79–1.463) | 0.645 |
60–79 | 1.904 (1.437–2.524) | < 0.001 | 1.069 (0.785–1.455) | 0.672 |
Race | < 0.001 | < 0.001 | ||
White | Reference | Reference | ||
Black | 1.505 (1.218–1.859) | < 0.001 | 1.473 (1.137–1.91) | 0.003 |
Others | 0.581 (0.429–0.787) | < 0.001 | 0.549 (0.374–0.806) | 0.002 |
Marital | < 0.001 | 0.007 | ||
Married | Reference | Reference | ||
Single | 1.355 (1.097–1.672) | 0.005 | 1.244 (0.957–1.618) | 0.103 |
Divorced | 1.478 (1.243–1.758) | < 0.001 | 1.43 (1.141–1.792) | 0.002 |
Year of diagnosis | 0.935 (0.882–0.99) | 0.022 | 0.949 (0.881–1.022) | 0.167 |
Grade | < 0.001 | < 0.001 | ||
Grade I | Reference | Reference | ||
Grade II | 1.04 (0.804–1.346) | 0.763 | 1.763 (1.109–2.803) | 0.017 |
Grade III | 1.612 (1.233–2.106) | 0 | 3.159 (1.984–5.029) | < 0.001 |
Grade IV | 2.439 (0.977–6.091) | 0.056 | 4.019 (1.179–13.706) | 0.026 |
T stage | < 0.001 | < 0.001 | ||
T1 | Reference | Reference | ||
T2 | 1.616 (1.329–1.966) | < 0.001 | 1.913 (1.441–2.54) | < 0.001 |
T3 | 2.241 (1.733–2.897) | < 0.001 | 2.798 (1.998–3.919) | < 0.001 |
T4 | 3.251 (2.487–4.25) | < 0.001 | 4.072 (2.868–5.782) | < 0.001 |
N stage | < 0.001 | < 0.001 | ||
N0 | Reference | Reference | ||
N1 | 1.532 (1.264–1.857) | < 0.001 | 1.907 (1.465–2.483) | < 0.001 |
N2 | 2.725 (2.151–3.452) | < 0.001 | 3.525 (2.599–4.781) | < 0.001 |
N3 | 3.518 (2.706–4.573) | < 0.001 | 4.546 (3.282–6.297) | < 0.001 |
ER status | 0.003 | 0.005 | ||
Negative | Reference | |||
Positive | 0.695 (0.546–0.885) | 0.003 | Reference | 0.005 |
PR status | < 0.001 | < 0.001 | ||
Negative | Reference | Reference | ||
Positive | 0.664 (0.534–0.825) | < 0.001 | 0.519 (0.395–0.681) | < 0.001 |
HER-2 status | 0.045 | 0.008 | ||
Negative | Reference | Reference | ||
Positive | 0.818 (0.672–0.995) | 0.045 | 0.723 (0.569–0.918) | 0.008 |
BCT as a prognostic factor for survival after propensity score matching
Non-BCT | BCT | P-value | |||
---|---|---|---|---|---|
No | % | No | % | ||
Year of diagnosis | < 0.001 | ||||
2010 | 478 | 17.30 | 420 | 15.20 | |
2011 | 420 | 15.20 | 426 | 15.50 | |
2012 | 500 | 18.10 | 436 | 15.80 | |
2013 | 480 | 17.40 | 437 | 15.90 | |
2014 | 442 | 16.00 | 483 | 17.50 | |
2015 | 437 | 15.90 | 555 | 20.10 | |
Age | 0.114 | ||||
< 45 | 233 | 8.50 | 244 | 8.90 | |
45–59 | 1035 | 37.50 | 1101 | 39.90 | |
60–79 | 1489 | 54.00 | 1412 | 51.20 | |
Race | 0.527 | ||||
White | 2202 | 79.90 | 2169 | 78.70 | |
Black | 254 | 9.20 | 274 | 9.90 | |
Others | 301 | 10.90 | 314 | 11.40 | |
Marital | 0.287 | ||||
Married | 1713 | 62.10 | 1671 | 60.60 | |
Single | 405 | 14.70 | 446 | 16.20 | |
Divorced | 639 | 23.20 | 640 | 23.20 | |
Grade | 0.669 | ||||
Grade I | 585 | 21.20 | 569 | 20.60 | |
Grade II | 1360 | 49.30 | 1406 | 51.00 | |
Grade III | 805 | 29.20 | 775 | 28.10 | |
Grade IV | 7 | 0.30 | 7 | 0.30 | |
T stage | 0.722 | ||||
T1 | 1692 | 61.40 | 1676 | 60.80 | |
T2 | 918 | 33.30 | 948 | 34.40 | |
T3 | 85 | 3.10 | 79 | 2.90 | |
T4 | 62 | 2.20 | 54 | 2.00 | |
N stage | 0.547 | ||||
N0 | 1760 | 63.80 | 1799 | 65.30 | |
N1 | 843 | 30.60 | 815 | 29.60 | |
N2 | 108 | 3.90 | 107 | 3.90 | |
N3 | 46 | 1.70 | 36 | 1.30 | |
ER status | 0.579 | ||||
Negative | 375 | 13.60 | 360 | 13.10 | |
Positive | 2382 | 86.40 | 2397 | 86.90 | |
PR status | 0.409 | ||||
Negative | 636 | 23.10 | 662 | 24.00 | |
Positive | 2121 | 76.90 | 2095 | 76.00 | |
HER-2 status | 0.458 | ||||
Negative | 2316 | 84.00 | 2337 | 84.80 | |
Positive | 441 | 16.00 | 420 | 15.20 |