CMAJ November 24, 2009; 181 (11).
First published November 2, 2009; doi:10.1503/cmaj.091391
© 2009 Canadian Medical Association or its licensors
All editorial matter in CMAJ represents the opinions of the authors and not necessarily those of the Canadian Medical Association.
A network meta-analysis of randomized controlled trials of biologics for rheumatoid arthritis: a Cochrane overview
Jasvinder A. Singh, MD,
Robin Christensen, PhD,
George A. Wells, PhD,
Maria E. Suarez-Almazor, MD,
Rachelle Buchbinder, MD,
Maria Angeles Lopez-Olivo, MD,
Elizabeth Tanjong Ghogomu, MD and
Peter Tugwell, MD
From the Department of Medicine (Singh), Minneapolis VA Medical Center and University of Minnesota, Minneapolis and Mayo Clinic College of Medicine, Rochester, USA; the Parker Institute: Musculoskeletal Statistics Unit (Christensen), Frederiksberg Hospital, Frederiksberg, Denmark; the Cardiovascular Research Reference Centre (Wells), University of Ottawa Heart Institute, Ottawa, Ont.; General Internal Medicine (Suarez-Almazor, Lopez-Olivo), Ambulatory Treatment and Emergency Care, University of Texas, M.D. Anderson Cancer Center, Houston, USA; the Monash Department of Clinical Epidemiology at Cabrini Hospital (Buchbinder), Department of Epidemiology and Preventive Medicine, Monash University, Malvern, Australia; and the Centre for Global Health (Ghogomu, Tugwell), Institute of Population Health, University of Ottawa, Ottawa, Ont.

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Figure 1: Flow chart for selection of systematic reviews included in the overview of systematic reviews of biologics for treatment of rheumatoid arthritis.
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Figure 2: Comparison of each biologic to placebo for benefit (defined as a 50% improvement in patient- and physician-reported criteria of the American College of Rheumatology [ACR50]). A value greater than 1.0 indicates a benefit from the biologic. CI = confidence interval. For details of studies included for each biologic, refer to Appendix 2 (avaiable at www.cmaj.ca/cgi/content/full/cmaj.091391/DC1).
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Figure 3: Comparison of each biologic to placebo for safety (deterined by number of withdrawals because of adverse events). A value less than 1.0 indicates a benefit from the biologic. CI = confidence interval. For details of the studies included for each biologic, refer to Appendix 2 (avaiable at www.cmaj.ca/cgi/content/full/cmaj.091391/DC1).
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Figure 4: Indirect comparison of each biologic to each other for benefit (ACR50). A value greater than 1.0 indicate a benefit from the biologic. CI = confidence interval. I2 values for the studies are presented in Figure 2.
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Figure 5: Indirect comparison of biologics to each other for safety (determined by number of withdrawals because of adverse events). A value greater than 1.0 indicate a benefit from the biologic. CI = confidence interval. I2 values for the studies are presented in Figure 2.
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Table 3: Stratified meta-analyses for benefit and safety for biologics used in the treatment of rheumatoid arthritis
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