Table 2 Baseline of patients characteristics
characteristics | N = 132,616 | Mastectomy N = 47,308(35.7%) N (%) | BCT N = 85,308(64.3%) N (%) | P value |
|---|---|---|---|---|
Age at diagnosis (year) | ||||
≤50 | 55,601(41.9%) | 22,378(47.3%) | 33,223(38.9%) | <0.0001 |
>50 | 77,015(58.1%) | 24,930(52.7%) | 52,085(61.6%) | |
Race | ||||
White | 102,334(77.2%) | 35,967(76%) | 66,367(77.8%) | <0.0001 |
Black | 17,554(13.2%) | 6440(13.6%) | 11,114(13%) | |
Othersa | 12,296(9.3%) | 4768(10.1%) | 7528(8.8%) | |
Unknown | 432(0.3%) | 133(0.3%) | 299(0.4%) | |
AJCC Stage | ||||
I | 32,445(24.5%) | 1459(3.1%) | 30,986(36.3%) | <0.0001 |
II | 63,391(47.8%) | 18,278(38.6%) | 45,113(52.9%) | |
III | 36,780(27.7%) | 27,571(58.3%) | 9209(10.8%) | |
ER status | ||||
Negative | 40,443(30.5%) | 13,641(28.8%) | 26,802(31.4%) | <0.0001 |
Positive | 92,173(69.5%) | 33,667(71.2%) | 58,506(68.6%) | |
PR status | ||||
Negative | 54,425(41%) | 18,956(40.1%) | 35,469(41.6%) | <0.0001 |
Positive | 78,191(59%) | 28,352(59.9%) | 49,839(58.4%) | |
Marital status | ||||
Married | 83,098(62.7%) | 29,055(61.4%) | 54,043(63.4%) | <0.0001 |
Widowed | 8460(6.4%) | 3213(6.8%) | 5247(6.2%) | |
Othersb | 36,779(27.7%) | 13,507(28.6%) | 23,272(27.3%) | |
Unknown | 4279(3.2%) | 1533(3.2%) | 2746(3.2%) | |
Laterality | ||||
Left | 67,337(50.8%) | 23,816(50.3%) | 43,521(51%) | 0.019 |
Right | 65,279(49.2%) | 23,492(49.7%) | 41,787(49%) |