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Table 2 Subgroup analysis of pooled hazard ratios for DLBCL with positive PD-L1 expression

From: The prognostic and clinicopathological significance of PD-L1 expression in patients with diffuse large B-cell lymphoma: a meta-analysis

Stratified analysis No. of studies No. of patients HR 95%CI P Heterogeneity
I 2 P
cutoff
 <0.3 7 633 2.195 0.884–5.446 0.009 74.50% 0.001
  ≥ 0.3 5 845 2.128 1.341–3.378 0 0 0.440
region I
 Asian region 9 1314 2.195 1.352–9.980 0.001 56.20% 0.019
 Non-Asian region 3 164 1.779 0.356–8.896 0.483 78.30% 0.010
region II
 China 7 757 2.729 1.618–4.605 0 37.10% 0.174
 Others 5 721 1.620 0.755–3.479 0.216 69.10% 0.004
  1. HR hazard ratio;CI confidence interval