Table 4

Inter-observer reproducibility for each criterion for pairs of observers and for all observers together

	Desquamation	Metaplasia	Epithelial inflammation	Epithelial eosinophils	Thickening of RBM	Submucosal inflammation	Submucosal eosinophils	Conclusion
RBM = reticular basement membrane.
Observers A/B
Kappa	0.561	0.710	0.295	0.266	0.535	0.239	0.242	0.195
95% CI	0.389 to 0.733	0.494 to 0.927	0.136 to 0.455	−0.018 to 0.551	0.330 to 0.739	0.024 to 0.455	0.030 to 0.454	−0.014 to 0.404
Observers A/C
Kappa	0.074	0.871	0.497	0.478	0.197	0.120	0.331	0.370
95% CI	0.019 to 0.129	0.728 to 1.013	0.298 to 0.696	0.040 to 0.915	0.042 to 0.352	−0.033 to 0.273	0.136 to 0.526	0.161 to 0.579
Observers B/C
Kappa	−0.040	0.730	0.140	0.362	0.156	0.390	0.370	0.273
95% CI	−0.150 to 0.060	0.504 to 0.950	0 to 0.280	0 to 0.660	0 to 0.370	−0.150 to 0.900	0.170 to 0.570	0 to 0.500
All together
Kappa	0.058	0.768	0.236	0.369	0.278	0.303	0.142	0.298
95% CI	0 to 0.18	0.645 to 0.890	0.11 to 0.36	0.240 to 0.498	0.146 to 0.411	0.180 to 0.426	0.020 to 0.263	0.16 to 0.43