Version: 1.0.0 | Published: 19 Feb 2026 | Updated: 8 days ago
Documentation
Description:
The Wrightington, Wigan and Leigh NHS Foundation Trust (WWL) OMOP database is a longitudinal secondary care dataset derived from routinely collected electronic health record (EHR) data for patients treated at WWL. The dataset has been mapped to the OMOP Common Data Model (CDM), enabling interoperability with other OMOP aligned data assets and supporting privacy preserving, multi centre observational research.
The database captures a broad range of clinical information spanning key secondary care activity, including patient demographics, diagnoses, procedures, medications, laboratory measurements, and outcomes. This provides a rich foundation for research across multiple clinical domains, including diagnostics, elective and emergency care pathways, long term conditions, and service evaluation within a district general hospital setting. With internationally recognised orthopaedic services, largescale realworld dermatology pathways, and data structured in the OMOP Common Data Model, WWL is positioned as a trusted partner for academic, industry, and health system research. This makes it an invaluable resource for researchers focusing on these clinical areas, as well as those interested in broader secondary care settings.
By conforming to the OMOP CDM, the WWL OMOP database supports the use of standardised OHDSI analytical tools and federated analytics approaches. This allows researchers to conduct reproducible analyses and participate in collaborative studies across institutions.
The WWL OMOP database is intended to support a wide range of use cases, including:
- Secondary care outcomes research
- Pathway and waiting list analyses
- Population health and health inequalities research
- Service evaluation and quality improvement
- Participation in regional, national, and international federated studies
Overall, the WWL OMOP database represents a growing and strategically important research asset. Its alignment to international data standards, combined with high quality routinely collected clinical data, positions WWL to contribute meaningfully to collaborative research initiatives and to generate insights that can directly inform improving patient outcomes.
Coverage
Spatial:
E08000010
Typical Age Range:
0-123
Provenance
Origin
Purposes:
- Care
- Administrative
Sources:
EPR
Collection Situations:
- Clinic
- Secondary care - Outpatients
- Secondary care - In-patients
- Secondary care - ICU
Temporal
Accrual Periodicity:
Irregular
Start Date:
01 January 2010
Time Lag:
Variable
Accessibility
Access
Access Rights:
in progress
Access Service:
in progress
Access Request Cost:
Varies based on request
Delivery Lead Time:
Variable
Jurisdictions:
UK
Data Controller:
Wrightington, Wigan and Leigh NHS Foundation Trust
Data Processor:
Wrightington, Wigan and Leigh NHS Foundation Trust
Usage
Data Use Limitations:
- General research use
- Commercial research use
Data Use Requirements:
Project-specific restrictions
Resource Creators:
Wrightington, Wigan and Leigh NHS Trust
Format and Standards
Vocabulary Encoding Schemes:
- OPCS4
- SNOMED CT
- NHS NATIONAL CODES
- ICD10
Conforms To:
OMOP
Languages:
en
Formats:
- text
- csv
- sql
- json
Observations
Statistical Population
Population Description
Population Size
Measured Property
Observation Date
Events
Total number of diagnoses in the OMOP CONDITION_OCCURRENCE table
5700000
Count
20 February 2026
Events
Total number of procedures in the OMOP PROCEDURE_OCCURRENCE table
11500000
Count
20 February 2026
Persons
Total number of distinct PERSON_ID in the OMOP PERSON table
567000
count
20 February 2026