Table 2. VAS according to time.

Factor	Period	N	M	SD	Post hoc
VAS (cm)	Pre-test	30	5.6667	0.80230	a > b > c
	Mid-term test	30	2.9333	0.58329
	Post-test	30	0.7667	0.67891

a, Pre-test; b, Mid-term-test; c, Post-test