Table 3

Intra- and inter-observer agreement based on slides treated with different antigen retrieval buffers
Antigen retrieval buffer

Inter-observer agreement

Fleiss’ Kappa

Intra-observer agreement

Cohen’s Kappa

Value 95% CI Value 95% CI
EDTA (pH 8.0) 0.912 (0.862, 0.912) 0.955 (0.918, 0.992)
Na Citrate (pH 6.0) 0.753 (0.677, 0.829) 0.853 (0.790, 0.916)
EDTA (pH 9.0) 0.643 (0.558, 0.728) 0.801 (0.730, 0.872)
P < 0.05 < 0.05

Xiong et al.

Xiong et al. Diagnostic Pathology 2013 8:27   doi:10.1186/1746-1596-8-27

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