Table 2.
Characteristics of the included documents (77 documents produced by 34 research groups/author teams)
| Author team or research group | Documents containing explicit methodological guidance for conducting overviews (59 documents produced by 24 research groups) | Documents that describe authors teams’ experience conducting published overviews (20 documents produced by 16 research groups) | ||||
|---|---|---|---|---|---|---|
| N documents (reference #–Additional file 4) | Years of publication | Document formats | N documents (reference #–Additional file 4) | Years of publication | Document formats | |
| Alberta Research Centre for Health Evidence (ARCHE) | 3 (A1-A3) | 2017–2019 | 2 journal articles, 1 associated thesis | 1 (A60) | 2019 | 1 journal article |
| Belgian Health Care Knowledge Centre (KCE) | 1 (A4) | 2016 | 1 journal article | – | – | – |
| Central South University (CSU) | 1 (A5) | 2020 | 1 journal article | – | – | – |
| Cochrane Child Health Field (CHF) | 11 (A6–A16) | 2010–2015 | 8 conference presentations, 2 internal documents, 1 journal article | 2 (A61–A62) | 2011–2013 | 1 journal article, 1 conference presentation |
| Cochrane Chile (CChile) | 1 (A17) | 2019 | 1 conference presentation | 1 (A17) | 2019 | 1 conference presentation |
| Cochrane Comparing Multiple Interventions Methods Group (CMIMG) | 19a (A6, A13, A14, A18-A36) | 2008–2019 | 8 conference presentations, 6 internal documents, 2 websites, 1 handbook chapter, 1 journal article, 1 interview transcript | – | – | – |
| Cochrane Consumers and Communication Review Group (CCRG) | – | – | – | 1 (A63) | 2009 | 1 journal article |
| Cochrane Effective Practice and Organization of Care Group (EPOC) | 1 (A37) | 2011 | 1 conference presentation | 3 (A64–A66) | 2011–2019 | 3 conference presentations |
| Cochrane Musculoskeletal Group (CM) | – | – | – | 1 (A67) | 2011 | 1 conference presentation |
| Cochrane Public Health Group (CPHG) | 1 (A38) | 2014 | 1 journal article | – | – | – |
| Cochrane Stroke Group (CSG) | – | – | – | 1 (A68) | 2015 | 1 conference presentation |
| Duke University (DukeU) | 1 (A39) | 2012 | 1 journal article | – | – | – |
| Dutch Cochrane Centre (DCC) | – | – | – | 1 (A69) | 2009 | 1 conference presentation |
| Evidence for Policy and Practice Information and Co-ordinating Centre (EPPI) | 2 (A40–A41) | 2015 | 1 journal article, 1 conference presentation | – | – | – |
| Glasgow Caledonian University (GCU) | 1 (A42) | 2019 | 1 journal article | 2 (A70–A71) | 2016–2017 | 2 journal articles |
| Harvard University and the Cyprus University of Technology (HarvU) | 1 (A43) | 2019 | 1 journal article | – | – | – |
| Joanna Briggs Institute Umbrella Reviews Methodology Group (JBI) | 3 (A44–A46) | 2013-2017 | 1 journal article, 1 internal document, 1 book chapter | – | – | – |
| King’s College London (KCL) | 1 (A47) | 2018 | 1 journal article | 1 (A47) | 2018 | 1 journal article |
| Ludwig Boltzmann Institute for Health Technology Assessment (LBI) | – | – | – | 1 (A72) | 2015 | 1 journal article |
| Northeast Institute of Evidence Synthesis and Translation at Rutgers School of Nursing (NEST) | 1 (A48) | 2016 | 1 book chapter | – | – | – |
| Norwegian Knowledge Centre for the Health Services (NOKC) | 1 (A49) | 2013 | 1 book chapter | – | – | – |
| Pontifical Xavierian University (PXU) | – | – | – | 1 (A73) | 2011 | 1 conference presentation |
| Robinson Research Institute, University of Adelaide (RRI) | – | – | – | 1 (A74) | 2016 | 1 conference presentation |
| Sapienza University of Rome (SUR) | 1 (A50) | 2016 | 1 book section | – | – | – |
| Trinity College Dublin (TCD) | 1 (A51) | 2011 | 1 journal article | – | – | – |
| University of Auckland (UAuck) | – | – | – | 1 (A75) | 2019 | 1 conference presentation |
| University of Birmingham (UBirm) | 1 (A52) | 2012 | 1 journal article | – | – | – |
| University of Calgary (UCalg) | – | – | – | 1 (A76) | 2017 | 1 case report |
| University of Connecticut (UConn) | 2 (A53–54) | 2019 | 2 journal articles | – | – | – |
| University of Cyprus (UCyp) | 1 (A55) | 2020 | 1 journal article | – | – | – |
| University of Dundee (UDun) | – | – | – | 1 (A77) | 2004 | 1 journal article |
| University of Oxford (UOx) | 1 (A56) | 2017 | 1 journal article | – | – | – |
| Western Journal of Nursing Research (WJNR) | 1 (A57) | 2014 | 1 editorial | – | – | – |
| Witten/Herdecke University (WHU) | 2 (A58–59) | 2014 | 2 journal articles | – | – | – |
aThree documents (conference presentations) not counted because they were produced by authors also affiliated with CMIMG (duplicates)