Table 6.

Prevalence-adjusted, bias-adjusted Fleiss’ kappa statistic (PABAK) values for each component of nasal endoscopy of patients with a history of endoscopic sinus surgery for chronic rhinosinusitis.

	Mean Prevalence Index	Mean Bias Index	Mean PABAK	Agreement Level
A. Middle Turbinate Position	0.543	0.186	0.443	Moderate
B. Middle Turbinate Integrity	0.286	0.100	0.543	Moderate
C. Middle Turbinate Mucosal Changes	0.359	0.285	0.148	Poor/slight
D. Uncinate Process	0.392	0.390	0.126	Poor/slight
E. Middle Meatus Patency	0.271	0.357	0.229	Fair
F. Ethmoid Sinus Cavity	0.414	0.271	0.429	Moderate
G. Maxillary Sinus Antrostomy	0.662	0.124	0.593	Moderate
H. Synechiae Involving Middle Meatus	0.257	0.300	0.257	Fair
I. Polyps Within Middle Meatus	0.771	0.043	0.886	Almost perfect
J. Discharge	0.229	0.186	0.314	Fair