*OMOP Common Data Model v5.1 Specifications*
*Authors: Christian Reich, Patrick Ryan, Rimma Belenkaya, Karthik Natarajan, Clair Blacketer*
***Release date needed*** --- # Table of Contents **[License](License.md)**

**[1 Background](Background/Background.md)**
[1.1 The Role of the Common Data Model](Background/TheRoleoftheCommonDataModel.md)
[1.2 Design Principles](Background/DesignPrinciples.md)
[1.3 Data Model Conventions](Background/DataModelConventions.md)

**[2 Glossary of Terms](GlossaryofTerms.md)**

**[3 Standardized Vocabularies](StandardizedVocabularies/StandardizedVocabularies.md)**
[3.1 CONCEPT](StandardizedVocabularies/CONCEPT.md)
[3.2 VOCABULARY](StandardizedVocabularies/VOCABULARY.md)
[3.3 DOMAIN](StandardizedVocabularies/DOMAIN.md)
[3.4 CONCEPT_CLASS](StandardizedVocabularies/CONCEPT_CLASS.md)
3.5 CONCEPT_RELATIONSHIP
3.6 RELATIONSHIP
3.7 CONCEPT_SYNONYM
3.8 CONCEPT_ANCESTOR
3.9 SOURCE_TO_CONCEPT_MAP
3.10 DRUG_STRENGTH
3.11 COHORT_DEFINITION
3.12 ATTRIBUTE_DEFINITION

**4 Standardized Metadata**
4.1 CDM_SOURCE

**5 Standardized Clinical Data Tables**
5.1 PERSON
5.2 OBSERVATION_PERIOD
5.3 SPECIMEN
5.4 DEATH
5.5 VISIT_OCCURRENCE
5.6 PROCEDURE_OCCURRENCE
5.7 DRUG_EXPOSURE
5.8 DEVICE_EXPOSURE
5.9 CONDITION_OCCURRENCE
5.10 MEASUREMENT
5.11 NOTE
5.12 OBSERVATION
5.13 FACT_RELATIONSHIP

**6 Standardized Health System Data Tables**
6.1 LOCATION
6.2 CARE_SITE
6.3 PROVIDER

**7 Standardized Health Economics Data Tables**
7.1 PAYER_PLAN_PERIOD
7.2 COST

**8 Standardized Derived Elements**
8.1 COHORT
8.2 COHORT_ATTRIBUTE
8.3 DRUG_ERA
8.4 DOSE_ERA
8.5 CONDITION_ERA