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. 2021 Jan 1;12(1):10–17. doi: 10.7150/jca.52540

Table 1.

The descriptive characteristics of T1bN0M0 TNBC before and after PSM

Before PSM After PSM
Characteristics No_Chemo Chemo P value No_Chemo Chemo P value
694 1155 529 529
Age (mean (SD)) 67.24(11.71) 57.06(10.29) <0.001 63.38(10.42) 62.82(9.18) 0.356
Marital_status (%)
Married 393(56.6) 772(66.8) <0.001 335(63.3) 327(61.8) 0.657
Unmarried 301(43.4) 383(33.2) 194(36.7) 202(38.2)
Race (%)
White 537(77.4) 871(75.4) 0.366 407(76.9) 389(73.5) 0.226
Nonwhite 157(22.6) 284(24.6) 122(23.1) 140(26.5)
Median_household_income (%)
Quartile 1 211(30.4) 375(32.5) 0.058 162(30.6) 156(29.5) 0.929
Quartile 2 181(26.1) 241(20.9) 140(26.5) 138(26.1)
Quartile 3 166(23.9) 279(24.2) 121(22.9) 130(24.6)
Quartile 4 136(19.6) 260(22.5) 106(20.0) 105(19.8)
Grade (%)
I+II 261(37.6) 282(24.4) <0.001 172(32.5) 173(32.7) 1.000
III 433(62.4) 873(75.6) 357(67.5) 356(67.3)
Radiation (%)
None 293(42.2) 447(38.7) 0.148 203(38.4) 226(42.7) 0.168
Yes 401(57.8) 708(61.3) 326(61.6) 303(57.3)

SD, standard deviation.