| Univariate | Multivariate | ||
---|---|---|---|---|
HR (95% CI for HR) | p-value | HR (95% CI for HR) | p-value | |
Stromal PD-L1 | ||||
 Low expression | 1 [reference] |  | 1 [reference] |  |
 High expression | 0.484 (0.259–0.903) | 0.023 | 0.291 (0.13–0.649) | 0.003 |
Residual tumor | ||||
 Optimal | 1 [reference] |  | 1 [reference] |  |
 Suboptimal | 2.287 (1.206–4.337) | 0.011 | 1.976 (1.016–3.845) | 0.045 |
Tumor grade | ||||
 Grade 1 | 1 [reference] |  | 1 [reference] |  |
 Grade 2 | 3.83 (1.967–7.455) | <  0.001 | 2.026 (0.881–4.66) | 0.096 |
 Grade 3 | 3.428 (1.685–6.972) | 0.001 | 2.469 (1.026–5.941) | 0.044 |
Tumor stage | ||||
 Early stage | 1 [reference] |  | 1 [reference] |  |
 Advanced stage | 5.993 (3.079–11.67) | <  0.001 | 4.684 (2.318–9.466) | <  0.001 |