Meta-analysis of single strain probiotics for the eradication of Helicobacter pylori and prevention of adverse events

Table 2 Excluded randomized controlled trials

Probiotic Strain	Reason for exclusion	Ref.
L. gasseri OLL2716	Study quality poor for treatment arm	Boonyaritichaikij et al[37]
L. rhamnosus GG	No H. pylori assay done	Gawrońska et al[38]
L. reuteri ATCC 55730	Outcome was H. pylori burden	Francavilla et al[39]
S. boulardii I-745 or L. acidophilus Lb	No eradication therapy given with probiotic	Gottleland et al[40]
Bifido. bifidum YIT4007	No eradication therapy given with probiotic	Miki et al[41]
L. casei Shirota	No eradication therapy given with probiotic	Cats et al[42]
L. gasseri OLL2716	No eradication therapy given with probiotic	Takagi et al[43]
L. johnsonii Lj1	No eradication therapy given with probiotic	Pantoflickova et al[44]
L. johnsonii Lj1	No eradication therapy given with probiotic	Gottleland et al[45]
L. reuteri ATCC 55730	No eradication therapy given with probiotic	Saggioro et al[46]
Bacillus clausii nr	< 2 RCT with eradication therapy	Nista et al[47]
Bifido. animalis DN173010	< 2 RCT with eradication therapy	Yaşar et al[48]
Bifido. infantis 2036	< 2 RCT with eradication therapy	Dajani et al[49]
L. johnsonii Lc-1	< 2 RCT with eradication therapy	Felley et al[50]
L. casei DN 114001	< 2 RCT with eradication therapy	Sýkora et al[51]
L. casei Shirota	< 2 RCT with eradication therapy	Sahagún-Flores et al[52]

nr: Strain not reported; RCT: Randomized controlled trials.