The GRADE approach is reproducible in assessing the quality of evidence of quantitative evidence syntheses

Available at http://www.gradeworkinggroup.org/. Accessed June 1, 2012. Guyatt, 2008, GRADE: an emerging consensus on rating quality of evidence and strength of recommendations, BMJ, 336, 924, 10.1136/bmj.39489.470347.AD Guyatt, 2011, GRADE guidelines: 2. Framing the question and deciding on important outcomes, J Clin Epidemiol, 64, 395, 10.1016/j.jclinepi.2010.09.012 Guyatt, 2011, GRADE guidelines: 4. Rating the quality of evidence—study limitations (risk of bias), J Clin Epidemiol, 64, 407, 10.1016/j.jclinepi.2010.07.017 Guyatt, 2011, GRADE guidelines: 8. Rating the quality of evidence—indirectness, J Clin Epidemiol, 64, 1303, 10.1016/j.jclinepi.2011.04.014 Guyatt, 2011, GRADE guidelines: 7. Rating the quality of evidence—inconsistency, J Clin Epidemiol, 64, 1294, 10.1016/j.jclinepi.2011.03.017 Guyatt, 2011, GRADE guidelines 6. Rating the quality of evidence—imprecision, J Clin Epidemiol, 64, 1283, 10.1016/j.jclinepi.2011.01.012 Guyatt, 2011, GRADE guidelines: 5. Rating the quality of evidence—publication bias, J Clin Epidemiol, 64, 1277, 10.1016/j.jclinepi.2011.01.011 Guyatt, 2011, GRADE guidelines: 9. Rating up the quality of evidence, J Clin Epidemiol, 64, 1311, 10.1016/j.jclinepi.2011.06.004 Balshem, 2011, GRADE guidelines: 3. Rating the quality of evidence, J Clin Epidemiol, 64, 401, 10.1016/j.jclinepi.2010.07.015 Guyatt, 2011, GRADE guidelines: 1. Introduction—GRADE evidence profiles and summary of findings tables, J Clin Epidemiol, 64, 383, 10.1016/j.jclinepi.2010.04.026 Atkins, 2005, Systems for grading the quality of evidence and the strength of recommendations II: pilot study of a new system, BMC Health Serv Res, 5, 25, 10.1186/1472-6963-5-25 West, 2002, Systems to rate the strength of scientific evidence, Evid Rep Technol Assess (Summ), 47, 1 Fernandes, 2010, Glucocorticoids for acute viral bronchiolitis in infants and young children, Cochrane Database Syst Rev, 10, CD004878 Towheed, 2005, Glucosamine therapy for treating osteoarthritis, Cochrane Database Syst Rev, 2, CD002946 Rosner, 2010, Acamprosate for alcohol dependence, Cochrane Database Syst Rev, 9, CD004332 Ducharme, 2004, Addition of anti-leukotriene agents to inhaled corticosteroids for chronic asthma, Cochrane Database Syst Rev, CD003133 Chauhan, 2012, Anti-leukotriene agents compared to inhaled corticosteroids in the management of recurrent and/or chronic asthma in adults and children, Cochrane Database Syst Rev, 5, CD002314 Dieleman, 2011, Prophylactic corticosteroids for cardiopulmonary bypass in adults, Cochrane Database Syst Rev, 5, CD005566 Liu, 2008, Helmets for preventing injury in motorcycle riders, Cochrane Database Syst Rev, 1, CD004333 Available at http://hrm.mcmaster.ca/. Accessed June 1, 2012. Shea, 2007, Development of AMSTAR: a measurement tool to assess the methodological quality of systematic reviews, BMC Med Res Methodol, 7, 10, 10.1186/1471-2288-7-10 Landis, 1977, The measurement of observer agreement for categorical data, Biometrics, 33, 159, 10.2307/2529310