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

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

Stratified analysis	No. of studies	No. of patients	HR	95%CI	P	Heterogeneity
Stratified analysis	No. of studies	No. of patients	HR	95%CI	P	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

ISSN: 1471-2407