Our Data
Understanding the databases curated by Connected West Yorkshire
It is important to distinguish between the two main datasets available, as they have different approval requirements and data coverage.
CY provides linked records from the full population of service users accessing primary care, secondary care, community care, and other services (excluding education). The time coverage varies by data provider but typically spans from the earliest digitally held record to the most recent extract. This dataset contains records from 1.2 million service users. Connected Yorkshire has Research Ethics Committee (REC) approval to provide de-identified data for research purposes.
CB links education records with records from service users accessing primary care, secondary care, community care, and other services. This dataset contains education records from 357,317 linked service users born after January 1988. In CB, some sensitive Health Data (for example, sexual health codes) have been removed; a codelist is available on request. The current data extract includes education records up to December 2025. Connected Bradford has both REC approval and Confidentiality Advisory Group (CAG) approval. Data linkage between health and education data is undertaken with ‘s251’ support’ from the HRA following CAG advice.