Table 3. Comparison of results between experimental group and control group.

Items	Experimental group		Control group
	Before treatment	After 4-week treatment	Before treatment	After 4-week treatment
Oral phase	16.27±4.72	14.67±4.45**	16.82±4.11	16.64±4.13*
Pharyngeal phase	42.87±6.85	40.77±6.12*	41.75±6.8	41.5±6.84
Total score	59.13±10.74	55.43±9.35**	58.57±9.75	58.14±9.83*

The values are mean ± standard deviation.

*p<0.05, **p<0.01 by paired t test between initial and final scores in the group