Table 3.

Spearman’s rho and 95% Confidence Intervals (CI) to Assess Criterion Validity of Versions 1 and 2 DIGEST_Safety and Overall DIGEST Grades with Reference Measures of Swallowing Function (n=1,331)

	n	SAFETY version 2				SAFETY version 1				DIGEST version 2				DIGEST version 1
		r	95% CI			r	95% CI			r	95% CI			r	95% CI
Sum of MBSImP items	1323	0.57	0.53	0.61		0.56	0.52	0.60		0.61	0.57	0.65		0.62	0.58	0.65
MDADI composite score at time of MBS	1175	−0.44	−0.49	−0.40		−0.45	−0.50	−0.40		−0.49	−0.53	−0.44		−0.49	−0.54	−0.45
Normalcy of diet (PSS-HN)	1323	−0.31	−0.36	−0.26		−0.29	−0.34	−0.24		−0.37	−0.42	−0.32		−0.37	−0.42	−0.32
Laryngeal elevation	1323	0.46	0.42	0.51		0.46	0.42	0.50		0.45	0.40	0.50		0.45	0.41	0.50
Anterior hyoid excursion	1323	0.25	0.20	0.30		0.24	0.19	0.29		0.26	0.21	0.31		0.27	0.21	0.32
Epiglottic movement	1323	0.51	0.46	0.56		0.49	0.44	0.53		0.50	0.46	0.55		0.50	0.45	0.54
Laryngeal vestibule closure	1323	0.58	0.54	0.62		0.58	0.54	0.62		0.55	0.51	0.59		0.55	0.51	0.59

Abbreviations: DIGEST, Dynamic Imaging Grade of Swallowing Toxicity; MBS, modified barium swallow; MBSImP, Modified Barium Swallow Impairment Profile; MDADI, MD Anderson Dysphagia Inventory; PSS-HN, Performance Status Scale for Head and Neck Cancer Patients. p <.0001 for all correlations; testing H₀: r = 0. Analysis includes 1 MBS per patient.