TABLE 3.

Associations between CD8‐positive T cells and CD68‐positive macrophage density with PD‐L1 expression, CD47 expression, and PD‐L1/CD47 co‐expression in LUSC cases

Factors		PD‐L1, N%			CD47			PDL1/CD47
		Positive	Negative	p	Positive	Negative	p	Positive	Negative	p
CD8	Low	17	79	0.005	57	39	0.095	14	82	0.004
	High	34	60		67	27		31	63
CD68	Low	20	77	0.051	48	49	<0.001	16	96	0.026
	High	31	62		76	17		29	64

Abbreviations: CD8, cluster of differentiation 8; CD47, cluster of differentiation 47; CD68, cluster of differentiation 68; CI, confidence interval; HR hazard ratio; LUSC, lung squamous cell carcinoma; PD‐L1, programmed cell death‐ligand 1.