Efficacy of different types of aerobic exercise in fibromyalgia syndrome: a systematic review and meta-analysis of randomised controlled trials

Table 1 Risk of bias (internal and external validity) of the randomised controlled trials' analysis

Author, year	Adequate randomisation	Adequate allocation concealment	Blinding of assessor	Intention-to-treat analysis	Inclusion of patients with mental disorders
Alentorn, 2008	0	0	+	-	+
Altan, 2004	0	0	0	-	-
Assis, 2006	+	+	-	+	-
Bircan, 2006	0	0	0	-	+
Buckelew, 2008	0	0	0	-	+
Da Costa, 2005	+	+	+	+	+
Ecvik, 2008	0	0	0	-	+
Etnier, 2009	0	0	0	-	+
Fontaine, 2007	0	0	0	-	+
Gowans, 2001	0	0	0	-	+
Gusi, 2006	0	0	0	-	-
Jentoft, 2001	0	0	-	+	+
Jones, 2008	+	+	+	+	-
King, 2002	+	0	+	+	+
Martin, 1996	0	0	+	+	+
McCain, 1988	0	0	+	-	+
Mengshoel, 1992	+	0	0	+	+
Meyer, 2000	0	0	0	-	+
Munguia, 2008	+	+	+	+	-
Nichols, 1994	0	0	0	-	+
Noregaard, 1997	0	0	0	+	+
Ramsay, 2000	0	0	+	+	0
Redondo, 2004	+	0	0	+	-
Richards, 2002	+	+	+	+	+
Rooks, 2007	+	+	+	+	0
Schachter, 2003	+	+	+	+	+
Sencan, 2004	0	0	0	+	0
Stephens, 2008	+	+	+	+	+
Tomas-Carus, 2008	0	+	+	+	0
Valim, 2003	0	0	+	+	+
Valkeinen, 2008	+	0	0	+	0
Van Santen, 2001	0	-	-	-	0
Van Santen, 2002	0	0	+	+	-
Vitorino, 2006	+	+	-	+	-
Wigers, 1996	0	0	+	+	0

ISSN: 1478-6362