a nonsignificant trendp = 0.074
After PSM, median PFS was 23.0 months (95% CI: 12.1–53.1) in the PD‐L1 < 50% group versus 4.5 months (95% CI: 2.7–19.8) in the ≥ 50% group, showing a nonsignificant trend toward shorter PFS (HR: 1.84; 95% CI: 0.93–3.63, p = 0.074) (Figure 3A ).