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The NICE taxonomy: a case study of developing a corporate taxonomy

The NICE taxonomy: a case study of developing a corporate taxonomy. Sadia Mughal Health Libraries Conference 19 th July 2010. What will be covered…. Need for a taxonomy Why develop a taxonomy Requirements of the taxonomy NICE taxonomy: key features Developing the NICE taxonomy

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The NICE taxonomy: a case study of developing a corporate taxonomy

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  1. The NICE taxonomy: a case study of developing a corporate taxonomy Sadia Mughal Health Libraries Conference 19th July 2010

  2. What will be covered… • Need for a taxonomy • Why develop a taxonomy • Requirements of the taxonomy • NICE taxonomy: key features • Developing the NICE taxonomy • Issues encountered • Future of the NICE taxonomy • Summary

  3. Need for a taxonomy • Merger of the National Institute for Clinical Excellence (NICE) and the Health Development Agency (HDA) in April 2005 • Taxonomy developed in-house by the Information Services Team, with consultant advice

  4. Why develop a taxonomy? A classification scheme providing a consistent language across NICE to support website navigation and the efficient search and retrieval of information OR… …a way to organise and make sense of the “NICE universe”

  5. Requirements of the taxonomy • Cover all subjects within NICE's remit • Simple in structure • Include both professional and lay terminology • Have a single set of: - preferred terms (professional terminology)- non-preferred terms (lay terminology, synonyms and acronyms)

  6. NICE taxonomy: key features 7 top level terms, known as Facets: • Illness or Condition • Medical Specialities • NICE • People and Populations • Public Health • Settings • Treatments, Procedures and Devices

  7. Cancer ILLNESS OR CONDITION Gastrointestinal Diseases Digestive System Liver Diseases Drug Treatments TREATMENTS, PROCEDURES AND DEVICES Surgical Procedures Diagnostic Therapeutic PUBLIC HEALTH Facet structure Narrower Term 2 (NT2) Narrower Term 1 (NT1) Broader Term (BT) Cancer by Site Cancer by Type Cardiovascular Pancreatic Diseases Individual Facets Public Health Practice Accidents Health Behaviour Alcohol Misuse

  8. NICE Taxonomy: key features • Facets are arranged in hierarchical order • The taxonomy is multi-hierarchical • Contains synonym relationships • Half the terms are synonyms • Currently contains 1700 terms • Updated once a month • Managed in MultiTes software

  9. Developing the NICE taxonomy Several health terminologies were used: • International Classification of Diseases (ICD-10) • Medical Subject Headings (MeSH) • Systematized Nomenclature of Medicine- Clinical Terms (SNOMED-CT) • British National Formulary (BNF) • International Classification for Surgical Procedures • Public Health Language (PHL) • Integrated Public Sector Vocabulary (IPSV) • Department of Health (DH) taxonomy

  10. Creating the facets • Top levels of ICD-10, PHL and BNF were used to form respectively, the clinical, public health and drug treatment facets • MeSH, SNOMED-CT, the DH and IPSV taxonomies were used as sources of terms and synonyms • International Classification for Surgical Procedures was used for surgical procedures terms • IPSV was used to provide 'lay terms' as synonyms

  11. Issues encountered (1) • How simple/complex should the taxonomy be? • How deep should we index? • Solution: to keep the taxonomy simple • Electronic Guidance Access Project (EGAP)

  12. Issues encountered (2) • The need for a review of the taxonomy: • Individual facets evaluated and key issues identified • People and Populations facet • Audience facet (new) • Settings facet

  13. Future of the NICE taxonomy • The new Population, Audience and Settings facets will allow personalisation of guidance. • Pilot test underway • Taxonomy is not perfect, but FIT FOR PURPOSE • Taxonomy is never a finished product

  14. NICE Taxonomy NICE Taxonomy is available at the following web address: bit.ly/nicetaxonomy

  15. Summary • Developed as a browsing, navigation and search tool for the NICE website • Specific requirements of the taxonomy • Structure of the NICE taxonomy • Development of the NICE taxonomy • Issues encountered • Future of the NICE taxonomy

  16. Any questions…? Sadia Mughal Assistant Information SpecialistNational Institute for Health and Clinical Excellence MidCity Place , 71 High Holborn , London WC1V 6NA  Email: sadia.mughal@nice.org.uk Tel: 44 (0)20 7045 2104 Web: http://nice.org.uk

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