data sharing: issues and available guidance · preparing raw clinical data for publication:...
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Data sharing: issues andavailable guidance
EQUATOR Network Seminar, 3rd October 2011
Iain HrynaszkiewiczJournal Publisher, BioMed Central
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Trial registration
Protocol publication
Protocol amendments
Methodology articles First report of trial findings
Secondary analysis Longer-term follow-up
Systematic review and meta-analysis
Lessons learned
Data publication, deposition and sharing
Potential for bias
Low transparency
High transparency
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Data sharing – the six W’s
• Why
• Where
• What
• HoW
• When
• Who
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Why share data
• Testing of additional hypotheses
• Teaching
• Validation of previous findings
• Integration with other data sets
• Simplification and enhancement of futuresystematic reviews and meta-analyses
Vickers, AJ: Whose data set is it anyway?Sharing raw data from randomized trials.Trials 2006, 7:15
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Why share data (cont)
• Reduction of error and fraud
• Increased academic credit (citations)
• Economic benefits
• Reduce waste/duplication of effort
• Drives new knowledge discovery
• Ultimately, better patient careHrynaszkiewicz I, Altman DG: Towardsagreement on best practice for publishingraw clinical trial data. Trials 2009, 10:17
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Avoiding reporting bias
October 2010:Reboxetine is“overall anineffective andpotentially harmfulantidepressant”
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Journal policiesBioMed Central/Public Library of ScienceSubmission/publication implies willingness to share
data/readily reproducible materials with other scientists on request
Annals Internal Med/BMJStatement about availability of materials for reproducible
research/data sharing required in published manuscript
NatureAs a condition of publication supporting data must be made
available to editors and peer-reviewers at the time of submission
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http://www.wellcome.ac.uk/About-us/Policy/Spotlight-issues/Data-sharing/Public-health-and-epidemiology/WTDV030689.htm
Walport M, Brest P: Sharingresearch data to improvepublic health. The Lancet.DOI:10.1016/S0140-6736(10)62234-9
More funder datasharing policies at:http://biosharing.org/policies
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http://bit.ly/oL8mg8
Science special issue ondata sharing:http://www.sciencemag.org/site/special/data/
Travis K, Feb 2011:Sharing Data inBiomedical and ClinicalResearchhttp://sciencecareers.sciencemag.org/career_magazine/previous_issues/articles/2011_02_11/caredit.a1100014
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What data to share/publish?
• Aggregated collection of patientobservations used for the summarystatistical findings presented in themain report of the research project
• The minimum level of detail necessaryto reproduce all numbers reported
Hrynaszkiewicz et al.: Preparing raw clinicaldata for publication: guidance for authors,editors and peer reviewers.BMJ 2010;340:c18 // Trials 2010, 11:9
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Where to publish data?
• Data included as online journal supplementarymaterial (additional files)
• Data papers (“data notes”) e.g. Trials(http://www.trialsjournal.com), BMC Research Notes
• Institution/domain-specific data repositories e.g.Edinburgh DataShare(http://datashare.is.ed.ac.uk/), Dryad(http://datadryad.org)
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HoW to share data?
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Protecting privacy
• Ethical guidelines e.g. InternationalCommittee of Medical Journal Editors,Committee on Publication Ethics
• Legal requirements e.g. HIPAA (USA),Data Protection Act (UK)
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HoW to share data?
BMJ 2010;340:c181Co-published in:Trials 2010, 11:9
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Anonymisation“...datasets that
contain three ormore indirectidentifiers, suchas age or sex,should bereviewed by anindependentresearcher orethics committee”
Hrynaszkiewicz et al.,BMJ 2010;340:c181
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File preparation
• Data should be clean and well-annotated
• Include statistical code if possible
• Use open (e.g. XML, RAW) and commonproprietary file formats (e.g. Excel, Stata) ifapplicable/available
• If possible, adhere to establisheddata/metadata standards e.g.http://www.cdisc.org/,http://www.biosharing.org/standards
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Use in practice
BMJ Instructions for authors:http://resources.bmj.com/bmj/authors/types-of-article/research“We also strongly support the view that researchers shouldseek informed consent to data sharing from researchparticipants ..... Consent is particularly important becauseparticipants may be identifiable in a dataset - even an"anonymised" one that does not contain names or addresses.The combination of three or more indirect identifierssuch as age, sex, and an unusual clinical detail may beenough for at least the participant, or anotherinterested party, to recognise themselves.”
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Use in practice
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“We aimed to make individual patient datafrom the International Stroke Trial (IST), oneof the largest randomised trials everconducted in acute stroke, available for publicuse, to facilitate the planning of future trialsand to permit additional secondary analyses.”
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When to share data?
• Let’s be pragmatic
• Data later is better than data never
• Enable retrospective data publication inrecognition of its value
• Built in “temporal latencies” establishedin genomics community
Contreras, J L: Prepublication Data Release,Latency, and Genome Commons, Science, 201010.1126/science.1189253
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Whose data are they anyway?
• Is it morally right for researchers orsponsors to keep patient data?
• Many opportunities from participantownership
• Patients sharing data associated withimproved health outcomes
Terry SF and Terry PF: Power to the People:Participant Ownership of Clinical Trial DataSci. Transl. Med. 3, 69cm3 (2011).
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Copyright and licenses
• Publishers should not require transfer ofcopyright for datasets published assupplementary material
• Data/facts are usually not copyrightable
• Removal of intellectual property in datamaximises potential for reuse, integration andnew knowledge discovery
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“The data should be released in standardizedformats without intellectual property constraints.”Conway PH, VanLare JM: Improving Access toHealth Care Data: The Open GovernmentStrategy. JAMA 2010;304(9):1007-1008.
Ball A: How to License Research Data(JISC/Digital Curation Centre), June 2011:http://www.dcc.ac.uk/webfm_send/332
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Conclusions
• Rather than ‘why share data?’, thequestion is ‘how’?
• Data sharing is a means to makeresearch more effective
• We can better serve the health ofpatients with transparency
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Questions?
EQUATOR Network Seminar, 3rd October 2011
Iain HrynaszkiewiczJournal Publisher, BioMed Central