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Table 2 Agreed results of AMSTAR-2 for fibromyalgia

From: A comparison of two assessment tools used in overviews of systematic reviews: ROBIS versus AMSTAR-2

Author (date), CAM

1. Were PICO components listed?

2. Protocol reported? Any deviations justified?

3. Study design justified?

4. Comprehensive literature search?

5. Was study selection performed in duplicate?

6. Was data extraction performed in duplicate?

7. List of excluded studies? Were these justified?

8. Characteristics of studies provided in detail?

Fibromyalgia

 Multiple cam therapies

  Holdcraft 2003 [14]

No

No

No

No

No

No

No

No

  Baronowsky 2009 [15]

No

No

Yes

No

No

No

No

No

  Terhorst 2011, 2012 [16, 17]

Yes

No

No

No

Yes

No

No

No

  De Silva 2010 [18]

No

No

No

No

Yes

Yes

No

No

 Homoeopathy

  Perry 2010 [19]

Yes

No

No

PY

Yes

Yes

No

PY

  Boehm 2014 [20]

No

No

No

PY

Yes

Yes

No

Yes

 Chiropractic treatment

  Ernst 2009 [21]

Yes

No

No

No

No

Yes

No

No

 Acupuncture

  Mayhew and Ernst 2007 [22]

No

No

No

PY

No

Yes

No

PY

  Daya 2007 [23]

No

No

No

PY

No

No

No

PY

  Langhorst 2010 [24]

Yes

No

No

PY

Yes

Yes

No

Yes

  Martin-Sanchez 2009 [25]

Yes

No

No

PY

No

No

No

No

  Cao 2013 [26]

Yes

No

No

PY

yes

Yes

No

Yes

  Deare 2013 [13]

Yes

Yes

No

Yes

Yes

Yes

Yes

Yes

  Yang 2014 [27]

Yes

No

No

PY

Yes

Yes

No

No

 Herbal medicines

  de Souza Nascimento 2013 [28]

Yes

No

yes

No

No

Yes

No

PY

Colic

 Multiple cam therapies

  Perry 2011 [29]

Yes

PY

No

PY

PY

Yes

No

Yes

  Bruyas-Bertholon 2012 [30]

No

No

No

No

No

No

No

PY

  Harb 2016 [31]

Yes

No

No

No

Yes

Yes

No

PY

  Gutierrez-Castrellon 2017 [32]

Yes

No

No

No

No

No

No

No

 Manipulation therapies

  Dobson 2012 [33]

Yes

Yes

No

Yes

Yes

Yes

Yes

Yes

  Gleberzon 2012 [34]

No

No

No

PY

No

Yes

No

PY

  Carnes 2017 [35]

No

PY

No

PY

Yes

Yes

No

PY

 Acupuncture

  Skejeie 2018 [36]

Yes

PY

No

Yes

Yes

Yes

No

Yes

 Herbal medicines

  Anheyer 2017 [37]

No

No

No

No

No

Yes

No

Yes

 Probiotics

  Sung 2013 [38]

Yes

No

No

No

Yes

Yes

Yes

PY

  Anabrees 2013 [39]

Yes

PY

No

PY

No

Yes

No

Yes

  Urbanska 2014 [40]

Yes

No

No

PY

No

No

No

PY

  Xu 2015 [41]

No

No

No

PY

Yes

Yes

No

Yes

  Schreck Bird 2017 [42]

Yes

No

No

No

Yes

No

No

Yes

  Dryl 2018 [43]

Yes

No

No

No

No

No

No

PY

  Sung 2018 [44]

Yes

PY

No

PYb

No

No

No

No

9. Risk of bias assessed?

10. Sources of funding of included studies?

11. Methods used to combine the findings of studies appropriate? Test on heterogeneity?

12. If meta-analysis performed was RoB accounted for?

13. Was RoB discussed in individual studies?

14. Was there discussion of any heterogeneity observed in the results?

15. If a quantitative synthesis, was publication bias investigated and discussed in relation to the results?

16. Reviewers’ conflict of interests stated?

Confidence in the review

Fibromyalgia

 Multiple cam therapies

PY

No

No MA

No MA

Yes

 

No MA

No

CL

No

No

No MA

No MA

Yes

No

No MA

No

CL

Yes

No

No

No

No

No

No

Yes

CL

No

No

No MA

No MA

Yes

Yes

No MA

Yes

CL

 Homoeopathy

 

Yes

No

No MA

No MA

Yes

Yes

No MA

Yes

CL

Yes

No

Yes

No

No

Yes

No

Yes

CL

 Chiropractic treatment

 

No

No

No MA

No MA

Yes

No

No MA

Yes

CL

 Acupuncture

 

No

NO

No MA

No MA

Yes

Yes

No MA

Yes

CL

PY

No

No MA

No MA

No

No

No MA

No

CL

Yes

No

Yes

Yes

Yes

Yes

No

No

CL

No

No

No

No

No

Yes

No

Yes

CL

Yes

No

Yes

No

Yes

Yes

Yes

Yes

CL

Yes

Yes

Yes

Yes

Yes

Yes

No

Yes

Low

Yes

No

No

No

No

Noa

Yes

No

CL

 Herbal medicines

 

Yes

No

No MA

No MA

No

No

No MA

Yes

CL

Colic

 Multiple cam therapies

Yes

No

No MA

No MA

Yes

No

No MA

Yes

Low

PY

No

No MA

No MA

No

No

No MA

No

CL

Yes

No

Yes

Yes

Yes

No

Yes

Yes

CL

No

No

No

No

Yes

No

Yes

No

CL

 Manipulation therapies

 

Yes

No

Yes

Yes

Yes

Noa

Yes

Yes

High

No

No

No MA

No MA

Yes

No

No MA

No

CL

Yes

No

No

No

No

No

No

No

CL

 Acupuncture

Yes

No

Yes

Yes

Yes

Yes

No

Nod

Low

 Herbal medicines

Yes

No

No MA

No MA

No

No

No MA

Yes

CL

 Probiotics

Yes

No

Yes

No

Yes

No

No

Yes

CL

Yes

No

Yes

No

Yes

Yes

No

Yes

Low

Yes

Yes

No

No

No

No

No

No

CL

Yes

No

Yes

No

No

No

No

Yes

CL

Yes

No

No

No

No

No

No

No

CL

Yes

No

No

No

No

No

No

No

CL

Yes

No

Yes

Yes

Yes

Yes

Yes

Noc

Low

  1. CL critically low, PY partial yes, MA meta-analysis, PICO participants, intervention, comparator, outcomes, RoB risk of bias
  2. aToo few studies to perform a test of heterogeneity
  3. bNot fully searched and search conducted Dec 2014
  4. cConflict of interest occurred but no indication of how it was dealt with
  5. dAll included studies were by the author team but did not indicate how this was dealt with
  6. Italicised columns represent the critical domains (see Appendix, Table 15)