In contrast, the better quality studies tend to have lower scores (QM (1) =6.99, p = 0.0082, R2 = 0.059, p = 0.0082), indicating that quality of a study is an important moderator of the pooled estimate of the prevalence of PD-L1 expression in SCLC (Figure S8). Here, CD274 is linked to small cell lung carcinoma.