Table 3.

Summary of interrater agreement between endoscopic results using White Light Imaging (WLI) or Narrow Band Imaging (NBI) and histopathological examination results using the proposed cut-off points/values according to the clinical classification used in the study.

Laryngeal Endoscopy	Clinical Classification	Cut-Off Point	Low-Risk VFL Cases	High-Risk VFL Cases	Cohens Kappa (κ) Coefficient Value	Bowker’s Test for Symmetry (p Value)
White Light Imaging	two-tier classification	2	150	146	0.44	<0.001
	three-tier classification acc. to Chen 2019	2	141	155	0.43	<0.001
		3	215	81	0.56	<0.001
Narrow Band Imaging	ELS classification	2	186	110	0.57	0.896
	Ni 2011 classification	4	181	115	0.63	<0.001
		5	211	85	0.62	0.404
	Ni 2019 classification	4	176	120	0.58	0.152
		5	208	88	0.68	<0.001
Total VFL cases in HP			187	109