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      A State-of-the-Science Overview of Randomized Controlled Trials Evaluating Acute Management of Moderate-to-Severe Traumatic Brain Injury

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          Abstract

          Moderate-to-severe traumatic brain injury (TBI) remains a major global challenge, with rising incidence, unchanging mortality and lifelong impairments. State-of-the-science reviews are important for research planning and clinical decision support. This review aimed to identify randomized controlled trials (RCTs) evaluating interventions for acute management of moderate/severe TBI, synthesize key RCT characteristics and findings, and determine their implications on clinical practice and future research. RCTs were identified through comprehensive database and other searches. Key characteristics, outcomes, risk of bias, and analysis approach were extracted. Data were narratively synthesized, with a focus on robust (multi-center, low risk of bias, n > 100) RCTs, and three-dimensional graphical figures also were used to explore relationships between RCT characteristics and findings. A total of 207 RCTs were identified. The 191 completed RCTs enrolled 35,340 participants (median, 66). Most (72%) were single center and enrolled less than 100 participants (69%). There were 26 robust RCTs across 18 different interventions. For 74% of 392 comparisons across all included RCTs, there was no significant difference between groups. Positive findings were broadly distributed with respect to RCT characteristics. Less than one-third of RCTs demonstrated low risk of bias for random sequence generation or allocation concealment, less than one-quarter used covariate adjustment, and only 7% employed an ordinal analysis approach. Considerable investment of resources in producing 191 completed RCTs for acute TBI management has resulted in very little translatable evidence. This may result from broad distribution of research effort, small samples, preponderance of single-center RCTs, and methodological shortcomings. More sophisticated RCT design, large multi-center RCTs in priority areas, increased focus on pre-clinical research, and alternatives to RCTs, such as comparative effectiveness research and precision medicine, are needed to fully realize the potential of acute TBI research to benefit patients.

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          Author and article information

          Journal
          J Neurotrauma
          J. Neurotrauma
          neu
          Journal of Neurotrauma
          Mary Ann Liebert, Inc. (140 Huguenot Street, 3rd FloorNew Rochelle, NY 10801USA )
          0897-7151
          1557-9042
          15 August 2016
          15 August 2016
          : 33
          : 16
          : 1461-1478
          Affiliations
          [ 1 ]Centre of Excellence in Traumatic Brain Injury Research, National Trauma Research Institute, Monash University and The Alfred Hospital , Victoria, Australia.
          [ 2 ]BehaviourWorks Australia, Monash Sustainability Institute, Monash University , Victoria, Australia.
          [ 3 ]Department of Neurosurgery, Antwerp University Hospital and University of Antwerp , Edegem, Belgium.
          [ 4 ]Division of Anaesthesia, University of Cambridge; Neurosciences Critical Care Unit , Addenbrooke's Hospital; Queens' College, Cambridge, United Kingdom.
          [ 5 ]Department of Intensive Care, Alfred Hospital, Victoria, Australia; Department of Epidemiology and Preventive Medicine, Monash University , Victoria, Australia.
          [ 6 ]Monash Institute of Medical Engineering (MIME); Division of Clinical Sciences and Department of Surgery, Central Clinical School, Monash University, Victoria, Australia; Department of Neurosurgery, Alfred Hospital, Victoria, Australia; F. Edward Hébert School of Medicine, Uniformed Services University of The Health Sciences (USUHS) , Bethesda, Maryland.
          [ 7 ]Lee Kong Chian School of Medicine, Nanyang Technological University , Singapore.
          [ 8 ]Cochrane Consumers and Communication Review Group, Centre for Health Communication and Participation, School of Psychology and Public Health, La Trobe University , Melbourne, Australia; Australian and New Zealand Intensive Care Research Centre, School of Public Health and Preventive Medicine, Monash University, Victoria, Australia.
          Author notes
          Address correspondence to: Peter Bragge, PhD, BehaviourWorks Australia, 8 Scenic Boulevard, Clayton, Victoria,, Australia 3800

          E-mail: peter.bragge@ 123456monash.edu
          Article
          PMC5003006 PMC5003006 5003006 10.1089/neu.2015.4233
          10.1089/neu.2015.4233
          5003006
          26711675
          495c773b-5a20-4435-ac19-5a9ac758ca1c
          Copyright 2016, Mary Ann Liebert, Inc.
          History
          Page count
          Figures: 3, Tables: 3, References: 128, Pages: 18
          Categories
          Review

          review,clinical trial,traumatic brain injury
          review, clinical trial, traumatic brain injury

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