Table 1. Relationship between PD-L1 expression and histological grades of cervical carcinomas.

	Variable	Histological Grade (%)			X2	p-value
		Well differentiated carcinomas	Moderately differentiated carcinomas	Poorly differentiated carcinomas
1	PD-L1 Status
	Positive for PD-L1	19 (57.6%)	64 (65.3%)	22 (42.3%)	7.308	0.026
	Negative for PD-L1	14 (42.4%)	34 (34.7%)	30 (57.7%)
2	Pattern of PD-L1 expression
	Diffuse staining of tumour cells	17 (89.5%)	55 (87.3%)	20 (90.9%)	0.231	0.891
	Marginal staining of tumour nests	2 (10.5%)	8 (12.7%)	2 (9.1%)