Table 5:

Inter-rater agreement and reliability using videostroboscopy and high-speed videoendoscopy dynamically interlinked with digital kymography. Agreement is reported as the percentage of direct agreement within the range of one level of the feature-specific scale. Reliability is reported by Spearman correlations, which are statistically significant at p<0.0001 (*), Cohen’s Kappa (κ), and the intraclass correlation as well as the 95% confidence intervals for κ and the ICC.

Vibratory Feature	% Agree (n)		Spearman’s p		ICC (95% CI)
	VS	HSV+DKG	VS	HSV+DKG	VS	HSV+DKG
Left Mucosal Wave	61	84	0.72*	0.85*	0.31 (0.10–0.49)	0.60 (0.45–0.71)
Right Mucosal Wave	60	91	0.84*	0.90*	0.55 (0.37–0.68)	0.84 (0.77–0.88)
Left Amplitude	96	94	0.84*	0.81*	0.57 (0.41–0.69)	0.47 (0.30–0.60)
Right Amplitude	96	96	0.86*	0.84*	0.64 (0.50–0.74)	0.63 (0.49–0.73)
Left-Right Phase Asymmetry	86	90	0.70*	0.77*	0.33 (0.10–0.51)	0.60 (0.45–0.71)
Left Vocal Fold Edge	93	100	0.75*	0.86*	0.58 (0.42–0.71)	0.53 (0.37–0.65)
Right Vocal Fold Edge	92	99	0.72*	0.84*	0.51 (0.34–0.64)	0.57 (0.42–0.68)
					Cohen’s κ (95% CI)
Left Vertical Phase Difference	88	87	--	--	0.12 (0.05–0.24)	0.08 (0.04–0.21)
Right Vertical Phase Difference	85	88	--	--	0.06 (0.01–0.15)	0.07 (0.05–0.32)

VS=videostroboscopy; HSV+DKG=high-speed videoendoscopy dynamically interlinked with digital kymography; ICC=intraclass correlation; CI=confidence interval