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. 2020 Mar 27;28(2):117–125. doi: 10.3727/096504019X15707883083132

Table 1.

Clinical Inputs: Weibull Survival Curve-Fitting Parameters

PD-L1 Expression Regimen Scale (λ) Shape (γ) Adjusted R 2
Overall survival
 ≥50% Pembrolizumab 0.063985 0.796046 0.999902
Chemotherapy 0.041061 1.089799 0.999146
 ≥20% Pembrolizumab 0.065791 0.816173 0.999862
Chemotherapy 0.041653 1.066223 0.999218
 ≥1% Pembrolizumab 0.072141 0.8074439 0.999866
Chemotherapy 0.04438 1.059809 0.999284
Progression-free survival
 ≥50% Pembrolizumab 0.144153 0.769625 0.998946
Chemotherapy 0.062074 1.232194 0.998621
 ≥20% Pembrolizumab 0.156777 0.770046 0.998626
Chemotherapy 0.059433 1.226069 0.999018
 ≥1% Pembrolizumab 0.16432 0.79536 0.998187
Chemotherapy 0.065666 1.197265 0.999148

PD-L1, programmed cell death ligand 1.