Probiotic monotherapy and Helicobacter pylori eradication: A systematic review with pooled-data analysis

Table 2 Quality assessment according to the type of studies

Ref.	Type of study	Jadad score1	QATCSS score2
Boonyaritichaikij et al[27], 2009	Randomized, single blind placebo-controlled, pilot	3	NA
Dore et al[28], 2014	Prospective, single center, open label pilot study	NA	8
Francavilla et al[29], 2008	Randomized, double blind placebo-controlled	4	NA
Gotteland et al[30], 2005	Randomized, open study	3	NA
Myllyluoma et al[31], 2007	Prospective, single center, open label pilot study	NA	7
Pantoflickova et al[32], 2003	Randomized, double blind placebo-controlled	4	NA
Rosania et al[33], 2012	Randomized, double blind placebo-controlled	4	NA
Sakamoto et al[34], 2001	Single center, open label pilot study	NA	6
Shimizu et al[35], 2002	Single center, open label pilot study	NA	6
Wang et al[36], 2004	Randomized, double blind placebo-controlled	2	NA
Namkin et al[37], 2016	Randomized, double blind placebo-controlled	5	NA

¹Jadad scale reaches a maximum score of 5;

²QATCSS reaches a maximum score of 9. NA: Not applicable.