Effect of composite yogurt enriched with acacia fiber and Bifidobacterium lactis

Table 2 Study parameters at week 8 and changes from baseline in all patients (mean ± SD)

	Test group (n = 58)				Control group (n = 59)				P value1
	Baseline	wk 8	Δ wk 8	P value	Baseline	wk 8	Δ wk 8	P value
Abdominal symptoms
Abdominal pain or discomfort (VAS)	34.05 ± 18.55	12.93 ± 14.99	-21.12	0	33.05 ± 19.94	16.5 ± 17.7	-16.53	< 0.001	0.26
Frequency of abdominal pain or discomfort/d	1.73 ± 2.03	0.84 ± 0.83	-0.89	0.004	1.21 ± 1.17	0.7 ± 0.8	-0.48	0.001	0.214
Abdominal distension or bloating (VAS)	44.40 ± 21.99	25.86 ± 18.1	-18.53	0	39.83 ± 20.82	28.8 ± 21.2	-11.02	< 0.001	0.096
Flatulence/d	5.19 ± 4.01	5.69 ± 5.08	0.5	0.391	4.98 ± 2.88	5.5 ± 4.0	0.51	0.266	0.991
Bowel habits
Defecation frequency/wk	6.38 ± 5.98	7.23 ± 4.28	0.85	0.289	5.69 ± 3.87	6.7 ± 4.2	1.04	0.052	0.843
Defecation duration (min)	8.68 ± 6.35	7.47 ± 4.95	-1.22	0.07	8.85 ± 5.59	6.7 ± 3.9	-2.12	< 0.001	0.301
Urgency	23 (39.7%)	16 (27.6%)	-7	0.118	22 (37.3%)	22 (37.3%)	0	1	0.146
Straining	39 (67.2%)	22 (37.9%)	-17	0	37 (62.7%)	20 (33.9%)	-17	0.002	0.959
Feeling of incomplete evacuation	39 (67.2%)	19 (32.8%)	-20	0	44 (74.6%)	23 (39.0%)	-21	< 0.001	0.815
Stool consistency (BSS)	3.95 ± 1.64	3.72 ± 1.02	-0.22	0.274	3.53 ± 1.59	3.88 ± 1.15	0.36	0.047	0.118
Bowel habit satisfaction (VAS)	32.33 ± 17.53	59.48 ± 19.21	27.16	0	31.95 ± 18.22	47.5 ± 20.1	15.51	< 0.001	0.01
Discomfort related to daily life (VAS)	36.21 ± 22.54	21.98 ± 19.91	-14.22	0	30.93 ± 17.58	22.9 ± 17.5	-8.05	0.007	0.199
Improvement in overall IBS symptoms (VAS)		64.2 ± 17.0				50.4 ± 20.5			< 0.001

¹Comparison between both groups. IBS: Irritable bowel syndrome; VAS: Visual analog scale; BSS: Bristol stool scale.