Data Models

Module 1	Introduction	Unit 1 CODI Introduction
Module 2	Getting Started	Unit 1 How to Use this Toolbox
Module 3	Audiences/Roles	Unit 1 Researchers	Unit 2 Network partners	Unit 3 Legal	Unit 4 Implementers	Unit 5 Participants
Module 4	People & Processes	Unit 1 CODI Approach	Unit 2 CODI Roles & Scope	Unit 3 Clinical and Community Linkages Assessment	Unit 4 Governance Model
Module 5	Standards	Unit 1 Data Models	Unit 2 FHIR Implementation Guides
Module 6	Tools	Unit 1 Growthcleanr	Unit 2 GrowthViz	Unit 3 CODI Prevalence Queries	Unit 4 Privacy Preserving Record Linkage	Unit 5 CODI Use Cases
Module 7	Implementations	Unit 1 CODI Implementations
Module 8	Resources	Unit 1 CODI References	Unit 2 CODI Resources
Module 9	Appendices	Unit 1 Appendix A: CODI Downloads

What are CODI data models?

The CODI data models are an extension of the National Patient-Centered Clinical Research Network’s (PCORnet) Common Data Model (CDM), a standard data model representing anonymized patient-level data for research. CODI augments the PCORnet CDM with a representation of chronic disease prevention programs and individual-level program participation data. Researchers can use CODI to access anonymized longitudinal record data for individuals that includes both clinical history and local public health program data.⁴ The Implementation Guide provides details on both data models.

CODI brings together data stored across different sectors and organizations to create individual-level, linked longitudinal records that include social determinants of health (SDOH), clinical and community interventions, and health outcomes. CODI also creates longitudinal household records, linking individual longitudinal records within the same household.

Broader access to standardized data

CODI builds on Common Data Models (CDMs, standardized concept tables and data elements) by adding new data tables and elements related to SDOH, geography, and clinical and community programs.

Social determinants of health

The CODI data models capture and integrate SDOH data from clinical and community-based organizations. Clinical organizations increasingly use electronic health records (EHRs) to screen, track, and evaluate individual SDOH. Community-based organizations screen and provide social services to address SDOH. Separately these data streams provide an inconsistent view of an individual’s social conditions. When linked across settings, they provide a more complete picture of an individual’s social conditions. CODI aggregates these data at the individual, family, and population levels.

RECORD LINKAGE DATA MODEL (RLDM)

Defines the data tables and data elements needed to perform the Privacy Preserving Record Linkage (PPRL) process. The model includes two tables from PCORnet CDM designed to contain unencrypted personal identifiable information (PII). These two tables must be implemented by a Data Owner or partner in a secure repository.

RESEARCH DATA MODEL (RDM)

Provides the data tables and data elements needed to answer selected chronic disease research and program evaluation questions.

User videos

Watch a demonstration with a subject matter expert (SME) explaining the CODI Data Model and exploring the Record Linkage Data Model (RLDM) and the Research Data Model (RDM).