ryan little - clinical data linkage service
TRANSCRIPT
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Ryan Little
CDLS Manager
SLaMClinical Data Linkage
Service(CDLS)
Thursday 12th June 2014
Consent, Ethics and Data Security workshop
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What is CDLS?
• A SLaM service funded by NIHR via BRC
• An Impartial third party service aka an ‘honest broker’
• Enhanced ICT security infrastructure
• Template site for Accredited Safe Haven (ASH) process in Caldicott 2 review
• Based in BRC Nucleus, Mapother House, Maudsley Hospital
• Services: 1) IG; 2) Linkage; 3) Storage; 4) Extraction
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What services does CDLS offer?
1) Information Governance support
2) Data Linkage
3) Data Storage
4) Linked Data Extraction
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1) Information Governance (IG)
• Determines all 3 other services
• CDLS Design data flows
• CDLS supports Project Owners with:
o Ethics applications
o Data agreements/contracts
o Data Controller/Caldicott Guardian approval
o HRA CAG s.251 approval (temporarily omits the common law duty of confidentiality for the purpose of linkage)
ExtractionStorageLinkage1. IG
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2) Data Linkage:
Either CDLS complete the linkage or…
SLaM Firewall
NHS Wide Area Network (WAN)
Step1: Data, scrambled NHS no. and scrambling algorithm
CDLS
Step5: CDLS scramble CRIS NHS no.
Step6: Records matched and BRCID added
Step7: Scrambled NHS no. removed and scrambling algorithm destroyed
Pseudonymised data with BRCIDs
QMS
Lambeth GP data
ExtractionStorage2. Linkage1. IG
Step4: Copy of CRIS ID table
Step2: Add Pseudonym
CRISCRIS ID table
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…CDLS facilitate third party linkage
CDLS
CRIS
NCRS data with NCRSID
KIT
HSCIC
2) NCRS PII table (with NCRSIDs)
HES
3) Matched BRCID added to NCRS PII table
5) HES & ONS data table created for matched NCRS and CRIS records (No PII included)
9) NCRS data with NCRSID
SLaM
6) PII removed leaving only BRCID, NCRSID, HESID
Key:
8) BRCID, NCRSID, HESID linkage table created
= Dataset = Data being processed
= Data flow = Possible data query
7) HES and ONS data
10) Anonymised linked-
data extract
1) CRIS PII table
4) HESID added NCRS and CRIS PII table
ExtractionStorage2. Linkage1. IG
ONS Mortality
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Linkage projects may require:
• Pseudonymisation
• Data cleansing
• Report of linkage accuracy
ExtractionStorage2. Linkage1. IG
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Linkages already completed include:
ExtractionStorage2. Linkage1. IG
Hospital Episode Statistics (HES)
Mortality
London
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CRIS linkages in process of completion:
ExtractionStorage2. Linkage1. IG
Lambeth DataNet s.136 Admissions
National Pupil Database
Neonatal, Maternity and Paediatric data
Opiate overdose contact
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Non-CRIS linkages in process of completion:
ExtractionStorage2. Linkage1. IG
Lambeth DataNet A&E data
KHP Outcomes and CostActivity data
KCH + GSTT diabetes data 15 GPs data
=
= Value-based Healthcare
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3) Data Storage
Involves:
• Renewing approvals, permissions and contracts
• Maintaining and updating access control
• Reporting/Auditing data being stored
• Data destruction (where necessary)
Extraction3. Storage2. Linkage1. IG
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4) Data Extraction
Includes:
• Query writing
• Anonymisation of extracts/databases
• Aggregated reports of high-level cohort numbers
4. Extraction
3. Storage2. Linkage1. IG