Table 1 Patients clinicopathological characteristics of the whole cohort
|  | PORT(n = 61) | non-PORT(n = 190) | P-value |
|---|---|---|---|
Age: no. (%) | 0.501 | ||
 ≤ 60 | 29(47.5) | 81(42.6) |  |
 > 60 | 32(52.5) | 109(57.4) |  |
Sex: no. (%) | Â | Â | 0.988 |
 Female | 28(45.9) | 87(45.8) |  |
 Male | 33(54.1) | 103(54.2) |  |
Smoking status: no. (%) | Â | Â | 0.729 |
 Never | 38(62.3) | 123(64.7) |  |
 Former or current | 23(37.7) | 67(35.3) |  |
Histology: no. (%) | Â | Â | 0.158 |
 SCC | 6(9.8) | 33(17.4) |  |
 ADC | 55(90.2) | 157(82.6) |  |
Tumor size: no. (%) | Â | Â | 0.651 |
 ≤3 | 37(60.7) | 109(57.4) |  |
 > 3 | 24(39.3) | 81(42.6) |  |
Location: no. (%) | Â | Â | 0.607 |
 Left lung | 25(41.0) | 85(44.7) |  |
 Right lung | 36(59.0) | 105(55.3) |  |
Visceral pleura: no. (%) | Â | Â | 0.358 |
 Negative | 44(72.1) | 125(65.8) |  |
 Positive | 17(27.9) | 65(34.2) |  |
N1 nodes involved: no. (%) | Â | Â | 0.083 |
 No | 16(26.2) | 73(38.4) |  |
 Yes | 45(73.8) | 117(61.6) |  |
Involved N2 stations: no. (%) | Â | Â | 0.050 |
 Single | 33(54.1) | 129(67.9) |  |
 Multiple | 28(45.9) | 61(32.1) |  |
LNR: no. (%) | Â | Â | 0.973 |
 ≤ 0.5 | 49(80.3) | 153(80.5) |  |
 > 0.5 | 12(19.7) | 37(19.5) |  |
EGFR status: no. (%) | Â | Â | 0.024 |
 Wild-type | 31(50.8) | 62(32.6) |  |
 Mutant | 21(34.4) | 101(53.2) |  |
 Unknown | 9(14.8) | 27(14.2) |  |
PD-L1 status: no. (%) | Â | Â | 0.551 |
 Negative | 18(29.5) | 43(22.6) |  |
 Positive | 17(27.9) | 59(31.1) |  |
 Unknown | 26(42.6) | 88(46.3) |  |