Table 2. Comparison of swallowing function within and between two groups.

	Experimental group (n=9)			Control group (n=9)
	Before	After 4-weeks	Changes	Before	After 4-weeks	Changes
FDS Total	28.22 ± 5.33	18.44 ± 5.64**	−9.78 ± 2.73†	27.56 ± 5.64	22.00 ± 6.00*	−5.56 ± 4.22
VR	1.44 ± 0.53	0.33 ± 0.50**	−1.11 ± 0.33†	1.67 ± 0.71	1.11 ± 0.60*	−0.56 ± 0.53
PR	1.11 ± 0.60	0.56 ± 0.53*	−0.56 ± 0.53	1.11 ± 0.60	0.89 ± 0.60	−0.22 ± 0.44
PAS	4.78 ± 1.56	2.11 ± 1.27**	−2.67 ± 0.87†	5.00 ± 1.32	3.89 ± 1.27*	−1.11 ± 1.05

All values are the mean ± standard deviation (SD). FDS: functional dysphagia scale; VR: vallecular residue; PR: pyriform sinuses residue; PAS: penetration-aspiration scale

*p<0.05, **p<0.01

^†Significant difference between groups (p<0.05)