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Table 3 Ranking of most prolific institutions (≥ 10 papers) and their collaborative patterns

From: Global collaborative networks on meta-analyses of randomized trials published in high impact factor medical journals: a social network analysis

Institution, country Total papers, n Signatures, n Institutional collaborations (with different institutions), n Institutional collaborations in same country (domestic institutions), n Institutional collaborations from different countries, n Main institutional collaborator (number of papers) Different collaborative countries, n
McMaster University, Canada 49 216 109 31 78 University of Toronto, Canada (10) 19
University of Oxford, UK 48 226 123 39 84 Radcliffe Infirmary, UK (13) 20
Harvard University, USA 36 210 104 47 57 Brigham and Women’s Hospital, USA (23) 16
Brigham and Women’s Hospital, USA 32 207 102 46 56 Harvard University, USA (23) 17
Radcliffe Infirmary, UK 30 96 46 14 32 University of Oxford, UK (13) 11
University of London, UK 29 207 125 34 91 University of Bristol, UK; University of Edinburgh, UK and University of Oxford, UK (5) 22
Copenhagen University Hospital, Denmark 28 169 93 8 85 Azienda Ospedaliera San Camillo-Forlanini, Italy; Université Paris V - René Descartes, France and University of Copenhagen, Denmark (4) 20
University of Toronto, Canada 27 123 55 23 32 McMaster University, Canada and Sunnybrook Health Science Center, Canada (4) 12
University of Sydney, Australia 23 120 70 14 56 National Health and Medical Research Council (NHMRC), Australia (6) 15
University of Birmingham, UK 22 80 51 26 25 Queen Mary, University of London, UK and University of Aberdeen, UK (3) 11
University of Bristol, UK 22 141 96 33 63 University of London, UK (5) 21
University of Alberta, Canada 20 94 57 14 43 Institute of Health Economics, Canada and University of Calgary, Canada (4) 15
University College London, UK 19 123 88 33 55 London School of Hygiene & Tropical Medicine, UK and Royal Free Hospital, UK (4) 20
University Hospital Basel, Switzerland 18 185 113 9 104 Inselspital, Switzerland (5) 20
Mayo Clinic, USA 18 157 130 35 95 University of Texas Medical School at Houston, USA (3) 23
University of Glasgow, UK 17 124 85 32 53 University of Cambridge, UK (4) 14
Erasmus MC University Medical Center Rotterdam, the Netherlands 17 145 106 8 98 Duke Clinical Research Institute (DCRI), USA and University of Sydney, Australia (3) 23
Cleveland Clinic, UK 16 75 51 11 40 Duke Clinical Research Institute (DCRI), USA and University of Sydney, Australia (3) 14
The University of York, UK 16 64 44 26 18 University of Leeds, UK (3) 8
University of Bern, Switzerland 16 128 72 8 64 Inselspital, Switzerland (11) 16
Medical Research Council’s Clinical Trials Unit, UK 16 81 59 25 34 University of Leicester, UK (3) 14
Johns Hopkins University, USA 15 58 42 18 24 University Hospital Basel, Switzerland (2) 11
Instituto di Ricerche Farmacologiche Mario Negri, Italy 15 85 63 9 54 University of Sydney, Australia (3) 14
Hamilton Health Sciences, Canada 14 64 37 5 32 McMaster University, Canada (9) 11
University of Calgary, Canada 14 62 35 17 18 University of Alberta, Canada (4) 10
Tufts University, USA 14 79 45 14 31 Tufts Medical Center, USA (6) 13
University of California, San Francisco, USA 14 77 56 24 32 San Francisco VA Medical Center, USA (3) 16
University of Aberdeen, UK 13 73 50 25 25 NHS Grampian, UK (5) 11
Sunnybrook Health Science Center, Canada 13 83 45 17 28 University of Toronto, Canada (10) 9
University of Ottawa, Canada 13 70 40 16 24 Children’s Hospital of Eastern Ontario, Canada; McMaster University, Canada; Ottawa Hospital Research Institute (OHRI), Canada; University of Manitoba, Canada and University of Toronto, Canada (3) 13
Wake Forest University, USA 12 55 31 17 14 University of East Anglia, UK and University of Washington, USA (4) 7
Inselspital, Switzerland 12 119 67 8 59 University of Bern, Switzerland (11) 16
University of Washington, USA 12 44 25 12 13 VA Puget Sound Health Care System, USA and Wake Forest University, USA (4) 8
University of Edinburgh, UK 12 106 66 30 36 University of London, UK (5) 17
Technical University of Munich, Germany 11 110 63 3 60 Columbia University Medical Center (CUMC), USA (4) 17
Queen Mary, University of London, UK 11 46 31 8 23 University of Birmingham, UK (3) 9
Tufts Medical Center, USA 11 41 16 8 8 Tufts University, USA (6) 3
London School of Hygiene & Tropical Medicine, UK 11 106 86 15 71 University College London, UK (4) 25
University of Pittsburgh, USA 11 64 51 16 35 Erasmus MC University Medical Center Rotterdam, the Netherlands and Ohio State University, USA (2) 12