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Table 2 Correlation between PD-L1 expression and clinicopathological features

From: Prognostic role of PD-L1 for HCC patients after potentially curative resection: a meta-analysis

Clinical characteristics

Number of studies

Cases

Odds ratio (95% CI)

P

Heterogeneity

I2 (%)

P

Gender (male/female)

11

2390

1.09 (0.78, 1.51)

0.62

21

0.24

Age (older/younger)

8

1535

0.93 (0.73, 1.19)

0.58

0

0.92

Hepatitis (yes/no)

8

1799

0.68 (0.47, 0.98)

0.04

5

0.40

Cirrhosis (yes/no)

6

999

1.12 (0.74, 1.70)

0.59

30

0.20

AFP (higher/lower)

8

1432

1.43 (1.02, 2.00)

0.04

35

0.14

Tumour size (larger/smaller)

8

1688

1.30 (0.88, 1.92)

0.19

55

0.03

Tumour encapsulation (no/yes)

4

933

0.91 (0.47, 1.77)

0.79

68

0.03

Tumour number (multiple/single)

8

1731

1.05 (0.75, 1.49)

0.77

31

0.18

Vascular invasion (yes/no)

9

2050

1.62 (0.99, 2.64)

0.06

75

< 0.001

TNM stage (advanced/earlier)

11

2169

1.04 (0.73, 1.50)

0.81

42

0.07

  1. AFP alpha-fetoprotein, CI confidence interval, PD-L1 programmed death ligand 1, TNM tumour-node-metastasis
  2. The italic P value refers to P < 0.05