Table 3. Comparison of the frequency of stool consistency based on Bristol stool scale one day after the intervention among three groups .

Variable	Days of intervention		Groups			Inter-group comparison P value *
			Intervention	Sham	Control
Stool consistency	1st day	No defecation	30 (100)	30 (100)	30 (100)	-
		Constipation	0 (0.0)	0 (0.0)	0 (0.0)
		Normal defecation	0 (0.0)	0 (0.0)	0 (0.0)
		Low diet fiber	0 (0.0)	0 (0.0)	0 (0.0)
	2nd day	No defecation	30 (100)	30 (100)	30 (100)	-
		Constipation	0 (0.0)	0 (0.0)	0 (0.0)
		Normal defecation	0 (0.0)	0 (0.0)	0 (0.0)
		Low diet fiber	0 (0.0)	0 (0.0)	0 (0.0)
	3rd day	No defecation	1 (3.3)	1 (3.3)	8 (26.7)	< 0.001
		Constipation	1 (3.3)	11 (36.7)	7 (23.3)
		Normal defecation	28 (93.3)	14 (46.7)	15 (50.0)
		Low diet fiber	0 (0.0)	4 (13.3)	0 (0.0)
	4th day	No defecation	0 (0.0)	0 (0.0)	0 (0.0)	< 0.001
		Constipation	1 (3.3)	12 (40.0)	10 (3.3)
		Normal defecation	29 (96.7)	14 (46.7)	19 (63.3)
		Low diet fiber	0 (0.0)	4 (13.3)	1 (3.3)
	Intra-group comparison P value **		< 0.001	< 0.001	< 0.001	-

*Fisher exact test, ** Cochran test.