Tumor Proportion Score (%) | 12-month survival | Patients in stratum | Proportion of patients in stratum (%) | Rate difference (%) | OR of survival rates | |
Pembrolizumab (%) | Placebo (%) | |||||
<1 | 61.0 | 49.6 | 190 | 32.9 | 11.3 | 1.58 |
1–49 | 70.7 | 49.7 | 186 | 32.2 | 21.0 | 2.44 |
≥50 | 73.2 | 47.2 | 202 | 34.9 | 26.0 | 3.06 |