Characteristic | PD-L1 expression | |||||||||
---|---|---|---|---|---|---|---|---|---|---|
TC | IC | |||||||||
Negative (n, %) | Any+ (n, %) | P value | Negative (n, %) | Any+ (n, %) | P value | |||||
Age (years) | 0.380 | Â | 0.719 | |||||||
 <58 | 43 | 67% | 21 | 33% |  | 40 | 63% | 24 | 38% |  |
 ≥58 | 43 | 60% | 29 | 40% | 48 | 67% | 24 | 33% |  | |
Sex | <0.001 | Â | 0.854 | |||||||
 Male | 45 | 52% | 41 | 48% |  | 55 | 64% | 31 | 36% |  |
 Female | 41 | 82% | 9 | 18% | 33 | 66% | 17 | 34% |  | |
Smoking status | 0.186 | Â | 0.508 | |||||||
 Never smoker | 72 | 66% | 37 | 34% |  | 72 | 66% | 37 | 34% |  |
 Smoker | 14 | 52% | 13 | 48% | 16 | 59% | 11 | 41% |  | |
Pathologic stage | 0.586 | Â | 0.098 | |||||||
 IIIB | 36 | 67% | 18 | 33% |  | 30 | 56% | 24 | 44% |  |
 IV | 50 | 61% | 32 | 39% | 58 | 71% | 24 | 29% |  | |
Mutation status | 0.049 | Â | 0.475 | |||||||
 EGFR mutant | 43 | 74% | 15 | 26% |  | 38 | 66% | 20 | 34% |  |
 KRAS mutant | 11 | 65% | 6 | 35% | 13 | 76% | 4 | 24% |  | |
 Other | 32 | 52% | 29 | 48% | 37 | 61% | 24 | 39% |  |