Connected Bradford Data
The Connected Bradford database comprises over 7 million patients, each with linked health and other associated data from diverse sources. This includes detailed health records for 1.4 million primary care patients (encompassing their full GP patient history), as well as several crucial satellite datasets, such as those from the Yorkshire Ambulance Service, Social Services, Education, and Mental Health. By combining these datasets, researchers can conduct meaningful investigations into health-related conditions and their underlying causes, with the ultimate goal of enhancing understanding and care for the citizens of Bradford.
Understanding the databases curated by Connected Bradford:
It is important to distinguish between the two main datasets available, as they have different approval requirements and data coverage.
Connected Bradford Research Database (also known as the Connected Yorkshire, or CBRD) 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. Projects using Connected Yorkshire require Research Ethics Committee (REC) approval only.
The Health and Education Research Database (also known as Connected Bradford, or HERD) 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. In HERD, some sensitive GP data (for example, sexual health codes) have been removed; a code list is available on request. The current data extract includes education records up to December 2021. Projects using Connected Bradford require both REC approval and Confidentiality Advisory Group (CAG) approval.
Education Data (part of Health and Education Research Database only, or HERD)
Age range: 0 to 22
Population size: 299.888
Observation Date: 1995 to 2020
Department for Education
School registration, attendance and attainment data
Adult Social Care
Age range: 50 to 90
Population size: 40,000
Observation Date: 1990 to 2023
Bradford Metropolitan District Council
Care home, domiciliary care and support data
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Children’s Social Care
Age range: 0 to 22
Population size: 50,000
Observation Date: 1990 to 2023
Department for Education
Fostering and looked after children data
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Primary Care
Age range: 0 to 104
Population size: 1,185,326
Observation Date: 1990 to 2024
General Practice
Appointment, medications and diseases data
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Mental Health Services
Age range: 6 to 104
Population size: 300,000
Observation Date: 1990 to 2022
Bradford District Care Trust
CAMHS, health visitor and referrals data
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Secondary Care Services
Age range: 6 to 104
Population size: 800,000
Observation Date: 1990 to 2023
Bradford Teaching Hospitals NHS Trust
Appointments, surgery and medications data
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Secondary Care Services
Age range: 6 to 104
Population size: 400,000
Observation Date: 1990 to 2023
Calderdale Hospitals NHS Trust (Calderdale and Huddersfield NHS Foundation Trust)
Appointments, surgery and medications data
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Urgent and Emergency Care
Age range: 6 to 104
Population size: 400,000
Observation Date: 1990 to 2019
Yorkshire Ambulance Service NHS Trust
Ambulance, 999 and 111 data
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