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Comparability among five assays on tumor
cell staining (all scores)
Tsao, MS et al. IASLC 2017
Fleiss Kappa Statistics
>0.90: Near perfect
0.80-0.90: Strong
0.60-0.79: Moderate
0.40-0.59: Weak
Moderate to strong reliability among
all
pathologists
on
tumor cell
scoring
PD-L1 Immunohistochemistry
Comparability Study in Real-Life
Clinical Samples (BLUEPRINT 2)