Table 3.

Overview of reviews: quality and outcomes summary.

Review (first author, year)	Primary outcome (as stated by review author or first listed)	Quality rating of SRs  (AMSTAR)	Quality rating of evidence (grade)					SR authors' conclusions
			Very low	Low	Moderate	High	Insufficient data to assess	Positive effect	Negative effect	Unclear effect
Aljasir, 2010 [8]	Management of type II diabetes	10		◆						◆
Anderson, 2011 [9]	Body mass index	9.5					◆			◆
Büssing, 2012 [10]	Pain (effect size)	11		◆				◆
Cabral, 2011 [11]	Treatment for psychiatric disorder	11					◆	◆
Dickinson, 2008 [12]	Blood pressure	10.5	◆							◆
Gerritsen, 2002 [13]	Pain (carpal tunnel syndrome)	8.5		◆						◆
Haaz, 2011 [14]	Clinical outcomes in arthritis	6	◆							◆
Heiwe, 2011 [15]	Muscular strength	11			◆					◆
Innes, 2007 [16]	Metabolic and anthropometric measures for diabetes mellitus	9					◆	◆
Innes, 2010 [17]	Menopausal symptoms	6.5					◆	◆
Kirkwood, 2005 [18]	Treatment for anxiety	10		◆						◆
Krisanaprakornkit, 2006 [19]	Treatment for clinical anxiety	10.5	◆							◆
Langhorst, 2012 [20]	Pain (fibromyalgia)	10.5		◆				◆
Lee, 2009 [21]	Menopausal symptoms	11		◆						◆
Lin, 2011 [22]	Quality of life for cancer patients	10		◆				◆
Mahendira, 2009 [23]	Effectiveness of treatment for osteoarthritis	8.5					◆			◆
Marc, 2011 [24]	Perceived stress	11		◆						◆
Morone, 2007 [25]	Pain (chronic in older adults)	9.5					◆			◆
Muller, 2004 [26]	Effectiveness of treatment for CTS	10.5		◆				◆
Pilkington, 2005 [27]	Treatment for depression	7					◆			◆
Posadzki, 2011 [28]	Pain (low back)	10		◆				◆
Ram, 2003 [29]	Asthma symptoms	6					◆			◆
Ramaratnam, 2000 [30]	Treatment for epilepsy	11		◆						◆
Slade, 2007 [31]	Pain (low back)	5.5					◆	◆
Smith, 2009 [32]	Psychological functioning of patients with cancer diagnosis	10.5		◆				◆
Smith, 2011 [33]	Pain (labour)	9		◆				◆
Total (average)		9.4	3	13	1	0	9	11	0	15