The Swallowing Clinical Assessment Score in Parkinson’s Disease (SCAS-PD) Is a Valid and Low-Cost Tool for Evaluation of Dysphagia: A Gold-Standard Comparison Study

Table 3

Correlation between SCAS-PD and VFSS according to the percentage of sample.

VFSS	SCAS-PD
	Total sample		Severity of dysphagia
			Normal		Functional		Mild		Moderate		Severe
	CCI ()	Weighted kappa ()	K		K		K		K		K
Severity of dysphagia
Total sample	0.935 (<0.001)	0.71 (<0.001)	—	—	—	—	—	—	—	—	—	—
Normal	—	—	0.63	<0.001	—	—	—	—	—	—	—	—
Functional	—	—	—	—	0.50	0.002	—	—	—	—	—	—
Mild	—	—	—	—	—	—	0.71	<0.001	—	—	—	—
Moderate	—	—	—	—	—	—	—	—	0.32	0.037	—	—
Severe	—	—	—	—	—	—	—	—	—	—	0.30	0.010

ICC, interclass correlation coefficient; k, kappa coefficient; SCAS-PD, Swallowing Clinical Assessment Score in Parkinson’s disease; VFSS, videofluoroscopy swallowing study.