Table 4 Patient characteristics after PSM
Variables | N = 57,820 | Mastectomy N = 28,910 N (%) | BCT N = 28,910 N (%) | P value |
|---|---|---|---|---|
Age at diagnosis (year) | 1 | |||
≤50 | 27,442(47.5%) | 13,721(47.5%) | 13,721(47.5%) | |
>50 | 30,378(52.5%) | 15,189(52.5%) | 15,189(52.5%) | |
Race | ||||
White | 43,713(75.6%) | 21,856(75.6%) | 21,857(75.6%) | 0.996 |
Black | 8226(14.2%) | 4115(14.2%) | 4111(14.2%) | |
Othersa | 5722(9.9%) | 2858(9.9%) | 2864(9.9%) | |
Unknown | 159(0.3%) | 81(0.3%) | 78(0.3%) | |
AJCC Stage | ||||
I | 2916(5%) | 1458(5%) | 1458(5%) | 1 |
II | 36,518(63.2%) | 18,259(63.2%) | 18,259(63.2%) | |
III | 18,386(31.8%) | 9193(31.8%) | 9193(31.8%) | |
ER status | ||||
Negative | 16,818(29.1%) | 8409(29.1%) | 8409(29.1%) | 1 |
Positive | 41,002(70.9%) | 20,501(70.9%) | 20,501(70.9%) | |
PR status | ||||
Negative | 22,926(39.7%) | 11,463(39.7%) | 11,463(39.7%) | 1 |
Positive | 34,894(60.3%) | 17,447(60.3%) | 17,447(60.3%) | |
Marital status | ||||
Married | 36,086(62.4%) | 18,043(62.4%) | 18,043(62.4%) | 0.998 |
Widowed | 3535(6.1%) | 1768(6.1%) | 1767(6.1%) | |
Othersb | 16,337(28.3%) | 8172(28.3%) | 8165(28.3%) | |
Unknown | 1862(3.2%) | 927(3.2%) | 935(3.2%) | |
Laterality | ||||
Left | 29,114(50.4%) | 14,554(50.4%) | 14,560(50.4%) | 0.960 |
Right | 28,706(49.6%) | 14,356(49.6%) | 14,350(49.6%) |