Table 2.
Comparison of patient characteristics by treatment assignment (N=725)
| Variable | All Patients (%) |
PORT |
Pa | |
|---|---|---|---|---|
| Yes | No | |||
| Gender |
|
|
|
0.029 |
| Female |
68(9) |
16(6) |
52(11) |
|
| Male |
657(91) |
242(94) |
415(89) |
|
| Age |
|
|
|
0.004 |
| < 65 |
564(78) |
216(84) |
348(75) |
|
| ≥65 |
161(22) |
42(16) |
119(25) |
|
| Tumor length |
|
|
|
0.012 |
| < 5cm |
391(54) |
123(48) |
268(57) |
|
| ≥5cm |
334(46) |
135(52) |
199(43) |
|
| pT-category |
|
|
|
0.137 |
| T1-2 |
123(17) |
42(16) |
81(17) |
|
| T3 |
546(75) |
198(77) |
348(75) |
|
| T4 |
56(8) |
18(7) |
38(8) |
|
| pN-category |
|
|
|
0.682 |
| N1 |
351(49) |
121(47) |
230(49) |
|
| N2 |
227(31) |
86(33) |
141(30) |
|
| N3 |
147(20) |
51(20) |
96(21) |
|
| LNMR |
|
|
|
0.983 |
| < 0.25 |
582(81) |
207(80) |
375(80) |
|
| ≥0.25 |
143(19) |
51(20) |
92(20) |
|
| Tumor differentiation |
|
|
|
0.469 |
| High (G1) |
90(12) |
35(13) |
55(12) |
|
| Moderate (G2) |
479(66) |
176(68) |
303(65) |
|
| Low (G3) |
156(22) |
49(19) |
107(23) |
|
| POCT |
|
|
|
<0.001 |
| Yes |
262(36) |
167(65) |
95(20) |
|
| No | 463(64) | 91(35) | 372(80) | |
aX2p value; LNMR, lymph-node metastatic ratio; PORT, postoperative radiation therapy; POCT, postoperative chemotherapy.