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Maas, Andrew

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  • 1. The Common data elements project Standardization of data collection in TBI NNS 2011 Fort Lauderdale, Florida July 11-13, 2011 Andrew Maas On behalf of the WG demographics and clinical assessments Brain Injury TODAY The common data elements project
  • 2. Why should we standardize data collection?
    • Scientific:
    • Increase comparability between studies
    • “ my patients do better than others!”
    • Individual patient analysis across studies
    • Cost-efficiency:
    • Simplify development of CRF
    • Reduce costs
  • 3. Standardizing data collection in Traumatic Brain Injury
    • Maas et al, 2011, J Neurotrauma, Feb;28(2):177-87 .
    “ It seems unlikely that we will ever be able to mount adequately-powered trials to study all of the relevant treatment modalities” “ Pooling data from multiple studies (individual patient data analysis), and comparative effectiveness research (CER) utilizing prospective observational data collection, can provide alternative sources of evidence that can be obtained in a more cost-efficient way”
  • 4. An example of the potential for individual patient data analysis: IMPACT
    • I nternational M ission on P rognosis a nd C linical T rial Design in TBI 2003-2011
    The problem: Vast heterogeneity of TBI populations Multicentre RCT’s have all failed to demonstrate benefit of promising treatments Database: A culture medium for exploring concepts to improve clinical trials in TBI Global aim: To optimize the design and analysis of clinical trials in TBI, to increase the likelihood of demonstrating benefit of a truly effective new therapy or therapeutic agent.
  • 5. IMPACT results
    • IMPACT: 43 + publications
    • Prognostic standards
    • Trial design and analysis
    • Broad selection
    • Covariate adjustment
    • Ordinal analysis
    • Increase of statistical power by 40-50%
    • Standardisation of data collection
    www.tbi-impact.org
  • 6. Potential for analysis of efficacy across studies
    • Lipid peroxidation / free radical scavengers
    Targeting glutamate excitotoxicity Author, year Country Center N Agent Young et al, 1996 USA 29 463 (1562) PEG-SOD Marshall et al, 1998 INT 50 1120 Tirilazad US – Tirilazad, 1991-1994 USA 36 1155 Tirilazad Author, year Country Center N Agent Eliprodil, 1993-1995 EU 20+ 452 Eliprodril Morris et al, 1999 INT 95 693 Selfotel Saphir, 1995-1997 EU 51 924 D-CPP-ene Cerestat, 1996-1997 INT 38 532 Aptiganel Yurkewicz et al , 1998-2001 USA 40 404 CP-101606
  • 7. TBI common data elements project – Interagency workshop March 2009
    • Working groups:
    • - Demographics & Clinical Assessment
    • - Biomarkers
    • - Neuroimaging
    • - Outcomes
    • - Plus 4 PH groups
    • Classification of data elements as
    • core – supplemental - emerging
    • 9 Publications in APMR in Fall 2010 describe process and results
  • 8. Biospecimens and biomarkers
    • Core elements:
    • - DNA sample for genomic analysis
    • - Acute plasma sample for proteomics/metabolomic analysis
    • Supplemental / emerging:
    • Serial sampling / CSF / Micro dialysis / PBMS’s
    • Processing and handling - acquisition - local processing - local storage - shipping - central storage
    • Note: no recommendations of safety parameters in RCT’s
  • 9. Radiologic imaging
    • Definitions
    • Imaging protocol
    • Flexible, electronic database
    • Core elements:
      • - All prognostic parameters
    • Supplemental / Emerging :
    • - Quantification
    • - Advanced imaging
  • 10. Outcome: recommendations for instruments Domain Instruments Global GOSE Neuropsych RAVLT, TMT, Processing speed Psych BSI-18 Symptoms RPQ Disability FIM: cognitive and motor subscales Social participation CHART-SF Qol SWLS
  • 11. Aim WG: Demographics & Clinical Assessment
    • To develop proposals on selection and
    • coding of data elements for studies
    • across the broad spectrum of TBI.
  • 12. Members WG demographics & clinical assessment David Adelson Phoenix, USA Tom Balkin Washington DC, USA Ross Bullock Miami, USA Doortje Engel Heidelberg, Germany Wayne Gordon New York, USA Cynthia Harrison-Felix Englewood, US Jean Langlois-Orman Houston, USA Henry L. Lew Richmond, USA Andrew Maas Antwerp, Belgium David Menon Cambridge, UK Claudia Robertson Houston, USA Karen Schwab Washington DC, USA Nancy Temkin Seattle, USA Alex Valadka Austin, USA Mieke Verfaillie Boston, USA Mark Wainwright Chicago, USA David Wright Atlanta, USA
  • 13. International experts
    • Giuseppe Citerio Italy
    • Peter Hutchinson UK
    • Bertil Romner Denmark
    • Juan Sahuquillo Spain
    • Franco Servadei Italy
    • Nino Stocchetti Italy
  • 14. The Common Data Elements project
    • Structure
    • Categories
    • Modules
    • Data Elements
    • Basic
    • Intermediate
    • Advanced
    www.tbi-impact.org Example Participants/subject characteristic Demographics Age/gender/race
  • 15. CDE: 8 categories
    • Participant/subject characteristics
    • Participant and family history
    • Injury/disease related events
    • Assessment and examinations
    • Treatments/interventions
    • Protocol experience
    • Adverse events and safety data
  • 16.  
  • 17. Elements and templates
  • 18. Example of data elements for TIL Therapy intensity level (TIL): Basic
  • 19. Therapy intensity level (TIL): Intermediate
  • 20. Structure of templates
    • CDE Variable
    • CDE definition
    • Recommended instrument for assessment
    • Description of measure
    • Permissible values
    • Classification: Basic / Advanced / Extended
    • Procedure
    • Comments / special instructions
    • Rationale /justification
    • References
  • 21. Example of template: age
  • 22. Building a CRF for an acute phase study in severe TBI
  • 23. CDE’s published
  • 24. Current status CDE’s
    • Published
    • Available
    • Work in progress
    www.tbi-impact.org www.commondataelements.ninds.nih.gov
  • 25. CDE’s: a living organism
    • Refinement:
      • Validation study Track TBI (UCSF)
      • (Inter)national feedback
    • Development electronic format
  • 26. Development electronic format
    • Open source
    • Agreement required on:
      • Data field name
      • Definition
      • XML tag
      • Time tag
    • Downloadable as element with field name tag or available within database structure?
    • “ Federated” database?
  • 27. The case for a new beginning
    • Standardisation essential
    • Global approach
    • Electronics standardisation
    • Facilitates:
    • RCT’s CER Systems biology
    The war on TBI