Table 2 PD-L1 expression depending on different cutoff values in pleural tissue and PE.

From: PD-L1 expression in pleural effusions of pulmonary adenocarcinoma and survival prediction: a controlled study by pleural biopsy

cutoff value

pleural % (cases)

cell block % (cases)

χ2 value

P value

κappa

1

64.71(33/51)

64.71(33/51)

0.878

0.349

0.227

3

35.29(18/51)

41.18(21/51)

0.298

0.585

0.131

≥5

11.76(6/51)

23.53(12/51)

7.367

0.007

0.605

  1. There is statistically significant difference when P <0.05.
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