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


+, yes; 0, unclear; -, no.

Häuser et al. Arthritis Research & Therapy 2010 12:R79   doi:10.1186/ar3002

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