Probiotic supplementation decreases intestinal transit time: Meta-analysis of randomized controlled trials

Table 6 Subgroup analysis of probiotic strains on intestinal transit time

Probiotic strain	Treatment effects (n)	SMD	95%CI	P-value
B. lactis HN019	2	0.72	0.27-1.18	< 0.01
B. lactis DN-173 010	3	0.54	0.15-0.94	< 0.01
L. rhamnosus GG	2	0.25	-0.38-0.87	0.44
Other single strains	2	0.23	-0.41-0.87	0.48
Strain combinations	4	0.17	-0.18-0.52	0.34

SMD: Standardized mean difference. B. lactis: Bifidobacterium lactis; L. rhamnosus: Lactobacillus rhamnosus.