Table 1. Results of Mann—Whitney U test between the healthy and dysphagia groups.

		Healthy group (n = 18)	Dysphagia group (n = 18)	P-value
Characteristics	Age (years)	76.5 ± 7.6	76.3 ± 11.6	0.791
	Weight (kg)	56.1 ± 6.8	56.2 ± 9.1	0.888
	Height (cm)	159.4 ± 9.8	162.0 ± 4.9	0.584
Laryngeal duration	Elevation phase (sec)	0.50 ± 0.12	0.68 ± 0.32	0.055
	Static phase (sec)	0.19 ± 0.06	0.29 ± 0.12	0.012*
	Descending phase (sec)	0.64 ± 0.34	0.67 ± 0.26	0.606
Laryngeal displacement	Elevation phase (mm)	20.9 ± 4.1	14.7 ± 4.7	0.000**
	Descending phase (mm)	17.9 ± 4.2	14.9 ± 5.1	0.085
Hyoid bone duration	Elevation phase (sec)	0.47 ± 0.14	0.59 ± 0.43	0.743
	Static phase (sec)	0.26 ± 0.12	0.33 ± 0.12	0.091
	Descending phase (sec)	0.56 ± 0.21	0.63 ± 0.33	0.424
Hyoid bone displacement	Elevation phase (mm)	10.5 ± 2.3	11.0 ± 3.9	0.606
	Descending phase (mm)	8.2 ± 2.3	10.3 ± 4.1	0.091
HL motion ratio		0.51 ± 0.07	0.76 ± 0.19	< 0.000**

* P < .05,

** P < .001.