Table 1 Baseline characteristics of patients by receipt of regional lymph node irradiation
Characteristics | ALL | RNI | no-RNI | P value |
|---|---|---|---|---|
(N = 326) | (n = 154) | (n = 172) | ||
Age | 0.182 | |||
Median | 48 | 47 | 49 | |
Range | 23–75 | 23–75 | 27–75 | |
BMI | 0.146 | |||
Median | 24.36 | 24.14 | 24.41 | |
Range | 16.73–38.87 | 16.73–35.38 | 17.22–38.87 | |
Menopause status | 0.733 | |||
Pre | 202(62.0) | 97(63.0) | 105(61.0) | |
Post | 124(38.0) | 57(37.0) | 67(39.0) | |
Laterality | 0.740 | |||
Left | 166(50.9) | 80(51.9) | 86(50.0) | |
Right | 160(49.1) | 74(48.1) | 86(50.0) | |
T-stage | 0.043 | |||
1 | 203(62.3) | 87(56.5) | 116(67.4) | |
2 | 117(35.9) | 62(40.3) | 55(32.0) | |
3 | 6(1.8) | 5(3.2) | 1(0.6) | |
Histological type | 0.203 | |||
Ductal | 302(92.6) | 146(94.8) | 156(90.7) | |
Others | 24(7.4) | 8(5.2) | 16(9.3) | |
Histologic grade | 1.000 | |||
II | 227(69.6) | 107(69.5) | 120(69.8) | |
III | 99(30.4) | 47(30.5) | 52(30.2) | |
LVI | 0.238 | |||
Yes | 75(23.0) | 40(26.0) | 35(20.3) | |
No | 251(77.0) | 114(74.0) | 137(79.7) | |
Tumor subtype | 0.535 | |||
HR +/HER2- | 256(78.5) | 117(76.0) | 139(80.8) | |
HER2 + | 43(13.2) | 22(14.3) | 21(12.2) | |
TN | 27(8.3) | 15(9.7) | 12(7.0) | |
Positive number of SLN | 0.003 | |||
1 | 262(80.4) | 112(72.7) | 150(87.2) | |
2 | 54(16.6) | 35(22.7) | 19(11.0) | |
3 | 10(3.1) | 7(4.5) | 3(1.7) | |