A systematic review and meta-analysis: probiotics in the treatment of irritable bowel syndrome

BMC Gastroenterology

Table 2 Assessment of methodological quality of randomised trials:

Paper	Nobaek 2000	O Sullivan 2000	Niedzelin 2001	Kim 2003	Saggioro 2004	Kajander 2006	O' mahoney 2005	Gawronska 2007	Bausserman 2005	Whorwell 2006	Niv 2005	Kim 2005	Guyonnet 2007	Gade 1989
Randomization	-	-	-	-	-	+	+	+	+	-	-	-	+*	+
Concealment of Allocation	-	+	-	-	-	+	+	+	+	-	-	-	+*	+
Double Blinding	+	+	-	+	-	+	+	+	+	+	+	+	+*	+
Intention to treat	-	+	+	+	+	-	+	+	-	+	+	+	+	+
Total	1	3	1	2	1	3	4	4	3	2	2	2	4*	4

ISSN: 1471-230X