Skip to main content

Table 2 Concordance between whole sections and paired TMAs of PD-L1 expression

From: Heterogeneous programmed death-ligand 1 expression in gastric cancer: comparison of tissue microarrays and whole sections

TMAsWhole sectionsAgreement rate (95% CI)Cohen’s κ value
No. of coresPositiveNegativeTotal
1
 Positive5425660.4% (52.5–68.3%)0.294 (0.188–0.400)
 Negative573693
 Total11138149
2
 Positive7127372.3% (65.0–79.6%)0.450 (0.327–0.573)
 Negative393675
 Total11038148
3
 Positive8528782.2% (75.9–85.5%)0.607 (0.478–0.736)
 Negative243559
 Total10937146
4
 Positive8638985.7% (79.8–91.6%)0.672 (0.543–0.801)
 Negative173451
 Total10337140
5
 Positive8739092.4% (87.8–97.0%)0.818 (0.710–0.926)
 Negative73441
 Total9437131
6
 Positive8548995.2% (91.3–99.0%)0.883 (0.790–0.975)
 Negative23335
 Total8737124
  1. CI confidence interval