Study Number 8502 - English Longitudinal Study of Ageing: Harmonised Cognitive Assessment Protocol, 2018-2023
DATA CURATION PROCEDURES
Data acquired for the UK Data Service collection undergo rigorous and comprehensive curation prior to publishing and release. This ensures that data, documentation and metadata are processed and published to the highest standard possible, both for ease of use in secondary analysis and for archival preservation.
The curation procedures carried out depend on the individual nature of each dataset and document, but as a general guide the following tasks are always undertaken:
- Disclosure review - if data confidentiality issues are identified, they are resolved in consultation with the data depositor;
- Data are checked for consistency and accuracy for example undocumented/out-of-range codes;
- Variable and value label metadata are checked and enhancements undertaken as necessary;
- Multiple data and documentation formats may be generated for dissemination and preservation;
- A catalogue metadata record is generated and a Digital Object Identifier (DOI) is assigned to the study where appropriate.
- Where the data are made available for online analysis, in addition to the checks above, question text may be added alongside variables and other enhancements made.
DATA AND DOCUMENTATION NOTES
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NEW EDITION INFORMATION
For the fourth edition (February 2025), the ELSA-HCAP2 and Family and Friends (Informant) 2023 data and documentation were deposited. Data were collected between April to November 2023 for ELSA-HCAP2 and April to December 2023 for Family and Friends (Informants). ELSA-HCAP2 had an additional aim; to examine the 5-year change in cognitive function in the subset of respondents that took part in ELSA-HCAP1 in 2018.
INFORMATION ON CONDITION OF USE
The Data Collection is available to UK Data Service registered users subject to the End User Licence Agreement.
Commercial use of the data requires approval from the data owner or their nominee. The UK Data Service will contact you.