Table 3.

Interobserver agreement (kappa statistics) for a diagnosis of high grade dysplasia, intramucosal adenocarcinoma, and submucosal adenocarcinoma—second histological assessment (n=75)

Reading	Overall kappa	Individual kappa	95% CI	Interpretation
All observers	0.65		0.56–0.74	Good
HGD		0.62	0.49–0.75	Good
IMC		0.52	0.39–0.65	Moderate
SMC		0.82	0.69–0.95	Very good
GI-1/GI-2	0.68		0.52–0.84	Good
GI-1/GSP	0.62		0.46–0.78	Good
GI-2/GSP	0.65		0.49–0.81	Good

GI-1/GI-2, gastrointestinal pathologists 1 and 2; GSP, general surgical pathologist; HGD, high grade dysplasia; IMC, intramucosal adenocarcinoma; SMC, submucosal adenocarcinoma; Kappa, kappa coefficient; 95% CI, confidence interval.