List of EBIC Publications

  • Differences in completion of screening logs between Europe and the United States in an emergency phase III trial resulting from HIPAA requirements.
    Slieker FJ, Maas AI, Kompanje EJ, Stocchetti N.
    Ann Surg. 2005 Feb; 241(2):382-3
  • Observer variation in the assessment of outcome in traumatic brain injury: experience from a multicenter, international randomized clinical trial.
    Wilson JT, Slieker FJ, Legrand V, Murray G, Stocchetti N, Maas AI.
    Neurosurgery. 2007 Jul;61(1):123-8; discussion 128-9.
  • Is the Glasgow Coma Scale score protected health information? The effect of new United States regulations (HIPAA) on completion of screening logs in emergency research trials.
    Kompanje EJ, Maas AI.
    Intensive Care Med. 2006 Feb;32(2): 313-4
  • Efficacy and safety of dexanabinol in severe traumatic brain injury: results of a phase III randomised, placebo-controlled, clinical trial.
    Maas A, Murray G, Henney H, Kassem N, Legrand V, Mangelus M, Muizelaar JP, Stocchetti N, Knoller N; on behalf of the Pharmos TBI investigators.
    Lancet Neurol. 2006 Jan;5(1):38-45
  • The management of patients with intradural post-traumatic mass lesions: a multicenter survey of current approaches to surgical management in 729 patients coordinated by the European Brain Injury Consortium.
    Compagnone C, Murray GD, Teasdale GM, Maas AI, Esposito D, Princi P, D'Avella D, Servadei F.
    Neurosurgery. 2005 Dec;57(6):1183-92; discussion 1183-92
  • Ethical considerations on consent procedures for emergency research in severe and moderate traumatic brain injury.
    Kompanje E, Maas A, Hilhorst M, Slieker F, Teasdale G.
    Acta Neurochir (Wien). 2005, 147(6): 633-639 (discussion 639-640)
  • Differences in completion of screening logs between Europe and the United States in an Emergency Phase III trial resulting from HIPAA requirements.
    AIR Maas, EJO Kompanje, FJA Slieker, N Stocchetti
    Annals of Surgery 2005, 241(2): 382-383
  • Clinical trials in traumatic brain injury: current problems and future solutions.
    Maas A, Marmarou A, Murray G, Steyerberg E.
    Acta Neurochir (Wien). 2004 [Suppl] 89: 113-118
  • New European Directive on clinical trials: implications for traumatic head injury research.
    Stocchetti N, Dearden M, Karimi A, Lapierre F, Maas A, Murray GD, Ohman J, Persson L, Sahuquillo J, Servadei F, Teasdale GM, Trojanowski T, Unterberg A.
    Intensive Care Med. 2004; 30(3): 517-518
  • New European Directive on clinical trials.
    Stocchetti N, Dearden M, Karimi A, Lapierre F, Maas A, Murray GD, Ohman J, Persson L, Sahuquillo J, Servadei F, Teasdale GM, Trojanowski T, Unterberg A.
    Lancet. 2003; 361(9367):1473
  • Traumatic subarachnoid hemorrhage: demographic and clinical study of 750 patients from the European brain injury consortium survey of head injuries.
    Servadei F, Murray G, Teasdale GM, Dearden M, Iannotti F, Lapierre F, Maas A, Karimi A, Ohman J, Persson L, Stocchetti N, Trojanowski T, Unterberg A.
    Neurosurgery. 2002; 50(2): 261-267 (discussion 267-269)
  • Intensive care management of head-injured patients in Europe: a survey from the European Brain Injury Consortium.
    Stocchetti N, Penny K, Dearden M, Braakman R, Cohadon F, Iannotti F, Lapierre F, Karimi A, Maas A, Murray GD, Ohman J, Persson L, Servadei F, Teasdale GM, Trojanowski T, Unterberg A.
    Intensive Care Med. 2001; 27(2):400-406
  • The value of the "worst" computed tomographic scan in clinical studies of moderate and severe head injury. European Brain Injury Consortium.
    Servadei F, Murray G, Penny K, Teasdale GM, Dearden M, Iannotti F, Lapierre F, Maas A, Karimi A, Ohman J, Persson L, Stocchetti N, Trojanowski T, Unterberg A.
    Neurosurgery. 2000; 46(1):70-75 (discussion 75-77)
  • The European Brain Injury Consortium survey of head injuries.
    Murray G, Teasdale GM, Braakman R, Cohadon F, Dearden M, Iannotti F, Karimi A, Lapierre F, Maas A, Ohman J, Persson L, Servadei F, Stocchetti N, Trojanowski T, Unterberg A.
    Acta Neurochir (Wien). 1999;141(3):223-236
  • The European Brain Injury Consortium. Nemo solus satis sapit: nobody knows enough alone.
    Teasdale GM, Braakman R, Cohadon F, Dearden M, Iannotti F, Karimi A, Lapierre F, Maas A, Murray G, Ohman J, Persson L, Servadei F, Stocchetti N, Trojanowski T, Unterberg A.
    Acta Neurochir (Wien). 1997;139(9):797-803
  • EBIC-guidelines for management of severe head injury in adults. European Brain Injury Consortium.
    Maas AI, Dearden M, Teasdale GM, Braakman R, Cohadon F, Iannotti F, Karimi A, Lapierre F, Murray G, Ohman J, Persson L, Servadei F, Stocchetti N, Unterberg A.
    Acta Neurochir (Wien). 1997;139(4):286-294

List of IMPACT Publications

  • Large Between-Center Differences in Outcome After Moderate and Severe Traumatic Brain Injury in the International Mission on Prognosis and Clinical Trial Design in Traumatic Brain Injury
    Lingsma HF, Roozenbeek B, Li B, Lu J, Weir J, Butcher I, Marmarou A, Murray GD, Maas AI, Steyerberg EW.
    J Neurosurgery 2011 March;68(3):601-608.
  • Standardizing Data Collection in Traumatic Brain Injury
    Andrew I.R. Maas, Cynthia L. Harrison-Felix, David Menon, P. David Adelson, Tom Balkin, Ross Bullock, Doortje C. Engel, Wayne Gordon, Jean Langlois-Orman, Henry L. Lew, Claudia Robertson, Nancy Temkin, Alex Valadka, Mieke Verfaellie, Mark Wainwright, David W. Wright, Karen Schwab.
    J Neurotrauma 2011 Febr;28(2):177-187.
  • Covariate adjustment increases statistical power in randomized controlled trials.
    On Behalf Of The Impact Investigators, Lingsma H, Roozenbeek B, Steyerberg E.
    J Clin Epidemiol. 2010 Aug 27.
  • Common Data Elements for Traumatic Brain Injury: Recommendations From the Interagency Working Group on Demographics and Clinical Assessment
    Andrew I. Maas, Cynthia L. Harrison-Felix, David Menon, P. David Adelson, Tom Balkin, Ross Bullock, Doortje C. Engel, Wayne Gordon, Jean Langlois Orman, Henry L. Lew, Claudia Robertson, Nancy Temkin, Alex Valadka, Mieke Verfaellie, Mark Wainwright, David W. Wright, Karen Schwab
    Archives of physical medicine and rehabilitation 1 November 2010 (volume 91 issue 11 Pages 1641-1649 DOI: 10.1016/j.apmr.2010.07.232)
  • Position Statement: Definition of Traumatic Brain Injury
    David K. Menon, Karen Schwab, David W. Wright, Andrew I. Maas
    Archives of physical medicine and rehabilitation 1 November 2010 (volume 91 issue 11 Pages 1637-1640 DOI: 10.1016/j.apmr.2010.05.017)
  • External Validity of Risk Models: Use of Benchmark Values to Disentangle a Case-Mix Effect From Incorrect Coefficients
    Vergouwe Y, Moons K, Steyerberg E.
    American Journal of Epidemiology, 2010 Jun 17.
  • Underpowered trials in critical care medicine: how to deal with them?
    Roozenbeek B, Lingsma HF, Steyerberg EW, Maas AI.
    Crit Care. 2010;14(3):423. Epub 2010 Jun 8.
  • Early prognosis in Traumatic Brain Injury: from prophecies to predictions.
    Lingsma HF, Roozenbeek B, Steyerberg EW, Murray GD, Maas AI.
    Lancet Neurology 2010;9:543-554.
  • Meta-analysis of a binary outcome using individual participant data and aggregate data.
    Riley RD, Steyerberg EW.
    Res Syn Meth 2010 (published online)
  • A simulation study evaluating approaches to the analysis of ordinal outcome data in randomized controlled trials in traumatic brain injury: results from the IMPACT Project.
    McHugh GS, Butcher I, Steyerberg EW, Marmarou A, Lu J, Lingsma HF, Weir J, Maas AI, Murray GD.
    Clin Trials. 2010;7(1):44-57.
  • IMPACT Recommendations for Improving the Design and Analysis of Clinical Trials in Moderate to Severe Traumatic Brain Injury.
    Maas AI, Steyerberg EW, Marmarou A, McHugh GS, Lingsma HF, Butcher I, Lu J, Weir J, Roozenbeek B, Murray GD.
    Neurotherapeutics. 2010 Jan;7(1):127-134.
  • Clinical Trials in Traumatic Brain Injury: Past Experience and Current Developments.
    Maas AI, Roozenbeek B, Manley GT.
    Neurotherapeutics. 2010 Jan;7(1):115-126.
  • Standardisation of data collection in traumatic brain injury: key to the future?
    Maas A.
    Critical Care 2009;13 no 6.
  • Prognosestelling bij middelzwaar en ernstig schedel-hersenletsel*
    Hester F. Lingsma, Andrew I.R. Maas en Ewout W. Steyerberg
    Ned Tijdschr Geneeskd. 2010;154:A739
  • The influence of enrolment criteria on recruitment and outcome distribution in traumatic brain injury studies: results from the IMPACT study.
    Roozenbeek B, Marmarou A, Butcher I, Lingsma HF, Lu J, McHugh GS, Murray GM, Weir J, Steyerberg EW.
    J Neurotrauma 2009;26(7):1069-75.
  • Baseline characteristics and statistical power in RCTs: selection, prognostic targeting, or covariate adjustment?
    Roozenbeek B, Maas AIR, Lingsma HF, Butcher I, Lu J, Marmarou A, McHugh GS, Weir J, Murray GD, Steyerberg EW.
    Critical Care Medicine 2009; aug 24.
  • Predicting outcome after traumatic brain injury: development and international validation of prognostic scores based on admission characteristics.
    Steyerberg EW, Mushkudiani N, Perel P, Butcher I, Lu J, McHugh GS, Murray GD, Marmarou A, Roberts I, Habbema JD, Maas AI.
    PLoS Med. 2008 Aug 5(8):e165.
  • New approaches to increase statistical power in TBI trials: insights from the IMPACT study.
    Maas AI, Lingsma HF; IMPACT study group.
    Acta Neurochir Suppl. 2008;101:119-24.
  • Classification of traumatic brain injury for targeted therapies.
    Saatman KE, Duhaime AC, Bullock R, Maas AI, Valadka A, Manley GT; Workshop Scientific Team and Advisory Panel Members.
    J Neurotrauma 2008 Jul;25(7);719-38.
  • Effects of Glasgow Outcome Scale misclassification on traumatic brain injury clinical trials.
    Lu J, Murray GD, Steyerberg EW, Butcher I, McHugh GS, Lingsma H, Mushkudiani N, Choi S, Maas AI, Marmarou A.
    J Neurotrauma 2008 Jun;25(6):641-51.
  • A systematic review finds methodological improvements necessary for prognostic models in determining traumatic brain injury outcomes.
    Mushkudiani NA, Hukkelhoven CW, Hernández AV, Murray GD, Choi SC, Maas AI, Steyerberg EW.
    J Clin Epidemiol. 2008 Apr;61(4):331-43.
  • Predicting outcome after traumatic brain injury: practical prognostic models based on large cohort of international patients.
    MRC CRASH Trial Collaborators, Perel P, Arango M, Clayton T, Edwards P, Komolafe E, Poccock S, Roberts I, Shakur H, Steyerberg E, Yutthakasemsunt S.
    BMJ. 2008;336:425-9.
  • Prognosis and clinical trial design in traumatic brain injury: the IMPACT study.
    Maas AI, Marmarou A, Murray GD, Teasdale SG, Steyerberg EW.
    J Neurotrauma. 2007 Feb;24(2):232-8. Review.
  • IMPACT database of traumatic brain injury: design and description.
    Marmarou A, Lu J, Butcher I, McHugh GS, Mushkudiani NA, Murray GD, Steyerberg EW, Maas AI.
    J Neurotrauma. 2007 Feb;24(2):239-50.
  • Statistical approaches to the univariate prognostic analysis of the IMPACT database on traumatic brain injury.
    McHugh GS, Butcher I, Steyerberg EW, Lu J, Mushkudiani N, Marmarou A, Maas AI, Murray GD.
    J Neurotrauma. 2007 Feb;24(2):251-8.
  • Prognostic value of demographic characteristics in traumatic brain injury: results from the IMPACT study.
    Mushkudiani NA, Engel DC, Steyerberg EW, Butcher I, Lu J, Marmarou A, Slieker F, McHugh GS, Murray GD, Maas AI.
    J Neurotrauma. 2007 Feb;24(2):259-69.
  • Prognostic value of the Glasgow Coma Scale and pupil reactivity in traumatic brain injury assessed pre-hospital and on enrollment: an IMPACT analysis.
    Marmarou A, Lu J, Butcher I, McHugh GS, Murray GD, Steyerberg EW, Mushkudiani NA, Choi S, Maas AI.
    J Neurotrauma. 2007 Feb;24(2):270-80.
  • Prognostic value of computerized tomography scan characteristics in traumatic brain injury: results from the IMPACT study.
    Maas AI, Steyerberg EW, Butcher I, Dammers R, Lu J, Marmarou A, Mushkudiani NA, McHugh GS, Murray GD.
    J Neurotrauma. 2007 Feb;24(2):303-14.
  • Prognostic value of admission blood pressure in traumatic brain injury: results from the IMPACT study.
    Butcher I, Maas AI, Lu J, Marmarou A, Murray GD, Mushkudiani NA, McHugh GS, Steyerberg EW.
    J Neurotrauma. 2007 Feb;24(2):294-302.
  • Prognostic value of secondary insults in traumatic brain injury: results from the IMPACT study.
    McHugh GS, Engel DC, Butcher I, Steyerberg EW, Lu J, Mushkudiani N, Hernández AV, Marmarou A, Maas AI, Murray GD.
    J Neurotrauma. 2007 Feb;24(2):287-93.
  • Prognostic value of cause of injury in traumatic brain injury: results from the IMPACT study.
    Butcher I, McHugh GS, Lu J, Steyerberg EW, Hernández AV, Mushkudiani N, Maas AI, Marmarou A, Murray GD.
    J Neurotrauma. 2007 Feb;24(2):281-6.
  • Prognostic value of admission laboratory parameters in traumatic brain injury: results from the IMPACT study.
    Van Beek JG, Mushkudiani NA, Steyerberg EW, Butcher I, McHugh GS, Lu J, Marmarou A, Murray GD, Maas AI.
    J Neurotrauma. 2007 Feb;24(2):315-28.
  • Multivariable prognostic analysis in traumatic brain injury: results from the IMPACT study.
    Murray GD, Butcher I, McHugh GS, Lu J, Mushkudiani NA, Maas AI, Marmarou A, Steyerberg EW.
    J Neurotrauma. 2007 Feb;24(2):329-37.
  • Some prognostic models for traumatic brain injury were not valid.
    Hukkelhoven CW, Rampen AJ, Maas AI, Farace E, Habbema JD, Marmarou A, Marshall LF, Murray GD, Steyerberg EW.
    J Clin Epidemiol. 2006 Feb;59(2):132-43.
  • Adjustment for strong predictors of outcome in traumatic brain injury trials: 25% reduction in sample size requirements in the IMPACT study.
    Hernández AV, Steyerberg EW, Butcher I, Mushkudiani N, Taylor GS, Murray GD, Marmarou A, Choi SC, Lu J, Habbema JD, Maas AI.
    J Neurotrauma. 2006 Sep;23(9):1295-303.
  • Randomized controlled trials with time-to-event outcomes: how much does prespecified covariate adjustment increase power?
    Hernández AV, Eijkemans MJ, Steyerberg EW.
    Ann Epidemiol. 2006 Jan;16(1):41-8. Epub 2005 Nov 7.
  • Mortality from traumatic brain injury.
    Lu J, Marmarou A, Choi S, Maas A, Murray G, Steyerberg EW, IMPACT and ABIC Study Group.
    Acta Neurochir Suppl 2005;95:218-5.
  • Design and analysis of phase III trials with ordered outcome scales: the concept of the sliding dichotomy.
    Murray GD, Barer D, Choi S, Fernandes H, Gregson B, Lees KR, Maas AI, Marmarou A, Mendelow AD, Steyerberg EW, Taylor GS, Teasdale GM, Weir CJ.
    J Neurotrauma. 2005 May;22(5):511-7. Review.
  • Subgroup analysis and covariate adjustment in randomized clinical trials of traumatic brain injury: a systematic review.
    Hernández AV, Steyerberg EW, Taylor GS, Marmarou A, Habbema JD, Maas AI.
    Neurosurgery. 2005 Dec;57(6):1244-53.
  • Predicting outcome after traumatic brain injury: development and validation of a prognostic score based on admission characteristics.
    Hukkelhoven CW, Steyerberg EW, Habbema JD, Farace E, Marmarou A, Murray GD, Marshall LF, Maas AI.
    J Neurotrauma. 2005 Oct;22(10):1025-39.
  • Prediction of outcome in traumatic brain injury with computed tomographic characteristics: a comparison between the computed tomographic classification and combinations of computed tomographic predictors.
    Maas AI, Hukkelhoven CW, Marshall LF, Steyerberg EW.
    Neurosurgery. 2005 Dec;57(6):1173-82; discussion 1173-82.
  • Clinical trials in traumatic brain injury: current problems and future solutions.
    Maas AI, Marmarou A, Murray GD, Steyerberg EW.
    Acta Neurochir Suppl. 2004;89:113-8.
  • Covariate adjustment in RCT's with dichotomous outcomes increases statistical power and reduces sample size requirements.
    A.V. Hernández et al
    J. Clin Epidemiol 2004; 57 (5): 454-60.