ID

35639

Description

OMOP Common Data Model (CDM) Drug Era A Drug Era is defined as a span of time when the Person is assumed to be exposed to a particular active ingredient. A Drug Era is not the same as a Drug Exposure: Exposures are individual records corresponding to the source when Drug was delivered to the Person, while successive periods of Drug Exposures are combined under certain rules to produce continuous Drug Eras. OMOP Common Data Model Version 6.0 Specifications 11October2018. The Observational Medical Outcomes Partnership (OMOP) was a public-private partnership established to inform the appropriate use of observational healthcare databases for studying the effects of medicalproducts. © 2014 Observational Health Data Sciences and Informatics This work is based on work by the Observational Medical Outcomes Partnership (OMOP) and used under license from the FNIH at http://omop.fnih.org/publiclicense. Version updated on 13.03.2019, from https://github.com/OHDSI/CommonDataModel/wiki/DRUG_ERA Drug Eras are derived from records in the DRUG_EXPOSURE table using a standardized algorithm. Each Drug Era corresponds to one or many Drug Exposures that form a continuous interval and contain the same Drug Ingredient (active compound). The difference between Persistence Window and Gap Days is that the former is the maximum drug-free time allowed between two subsequent DRUG_EXPOSURE records, while the latter is the sum of actual drug-free days for the given Drug Era under the above assumption of non-stockpiling. The choice of a standard Persistence Window of 30 and the non-stockpiling assumption is arbitrary, but has been shown to deliver good results in drug-outcome estimation. Other problems, such as estimation of drug compliance, my require a different or drug-dependent Persistence Window/stockpiling assumption. Researchers are encouraged to consider creating their own Drug Eras with different parameters as Cohorts and store them in the COHORT table. For more information, please see https://github.com/OHDSI/CommonDataModel/wiki/DRUG_ERA

Link

http://omop.fnih.org/publiclicense

Keywords

Versions (2)
  1. 1/4/17 1/4/17 -
  2. 3/13/19 3/13/19 -
Copyright Holder

Observational Medical Outcomes Partnership (OMOP)

Uploaded on

March 13, 2019

DOI

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License

Creative Commons BY-NC 3.0
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OMOP Common Data Model (CDM)

English

Drug Era

1 forms  
  1. StudyEvent: ODM
    1. Drug Era
Drug Era
Description

Drug Era

Alias
UMLS CUI-1
C0013227
UMLS CUI-2
C1948053
Drug era ID
Description

A unique identifier for each drug era.

Data type

integer

Alias
UMLS CUI [1,1]
C0013227
UMLS CUI [1,2]
C1948053
UMLS CUI [1,3]
C1300638
Person ID
Description

A foreign key identifier to the person who is subjected to the drug during the drug era. The demographic details of that person are stored in the person table.

Data type

integer

Alias
UMLS CUI [1]
C2348585
Drug concept ID
Description

A foreign key that refers to a Standard Concept identifier in the Standardized Vocabularies for the Ingredient Concept. The drug_concept_id field only contains Concepts that have the concept_class 'Ingredient'. The Ingredient is derived from the Drug Concepts in the DRUG_EXPOSURE table that are aggregated into the Drug Era record.

Data type

integer

Alias
UMLS CUI [1,1]
C0013227
UMLS CUI [1,2]
C0178566
UMLS CUI [1,3]
C1300638
Drug era Start Datetime
Description

The start date for the Drug Era constructed from the individual instances of Drug Exposures. It is the start date of the very first chronologically recorded instance of conutilization of a Drug. The Drug Era Start Date is the start date of the first Drug Exposure.

Data type

datetime

Alias
UMLS CUI [1,1]
C0013223
UMLS CUI [1,2]
C1948053
UMLS CUI [1,3]
C0808070
UMLS CUI [1,4]
C1301880
Drug era End Datetime
Description

The end date for the drug era constructed from the individual instance of drug exposures. It is the end date of the final continuously recorded instance of utilization of a drug. The Drug Era End Date is the end date of the last Drug Exposure. The End Date of each Drug Exposure is either taken from the field drug_exposure_end_date or, as it is typically not available, inferred using the following rules: For pharmacy prescription data, the date when the drug was dispensed plus the number of days of supply are used to extrapolate the End Date for the Drug Exposure. Depending on the country-specific healthcare system, this supply information is either explicitly provided in the day_supply field or inferred from package size or similar information. For Procedure Drugs, usually the drug is administered on a single date (i.e., the administration date). A standard Persistence Window of 30 days (gap, slack) is permitted between two subsequent such extrapolated DRUG_EXPOSURE records to be considered to be merged into a single Drug Era.

Data type

datetime

Alias
UMLS CUI [1,1]
C0013223
UMLS CUI [1,2]
C1948053
UMLS CUI [1,3]
C0806020
UMLS CUI [1,4]
C1522314
Drug exposure count
Description

The number of individual drug exposure occurrences used to construct the drug era.

Data type

integer

Alias
UMLS CUI [1,1]
C0332157
UMLS CUI [1,2]
C0013227
UMLS CUI [1,3]
C0750480
Gap days
Description

The number of days that are not covered by DRUG_EXPOSURE records that were used to make up the era record. The Gap Days determine how many total drug-free days are observed between all Drug Exposure events that contribute to a DRUG_ERA record. It is assumed that the drugs are "not stockpiled" by the patient, i.e. that if a new drug prescription or refill is observed (a new DRUG_EXPOSURE record is written), the remaining supply from the previous events is abandoned.

Data type

integer

Alias
UMLS CUI [1,1]
C0013227
UMLS CUI [1,2]
C0332157
UMLS CUI [1,3]
C3887622
UMLS CUI [1,4]
C0439228
UMLS CUI [1,5]
C0750480
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Similar models

Drug Era

1 forms
  1. StudyEvent: ODM
    1. Drug Era
Name
Type
Description | Question | Decode (Coded Value)
Data type
Alias
Item Group
Drug Era
C0013227 (UMLS CUI-1)
C1948053 (UMLS CUI-2)
Drug era ID
Item
Drug era ID
integer
C0013227 (UMLS CUI [1,1])
C1948053 (UMLS CUI [1,2])
C1300638 (UMLS CUI [1,3])
Person ID
Item
Person ID
integer
C2348585 (UMLS CUI [1])
Drug concept ID
Item
Drug concept ID
integer
C0013227 (UMLS CUI [1,1])
C0178566 (UMLS CUI [1,2])
C1300638 (UMLS CUI [1,3])
Drug era Start Datetime
Item
Drug era Start Datetime
datetime
C0013223 (UMLS CUI [1,1])
C1948053 (UMLS CUI [1,2])
C0808070 (UMLS CUI [1,3])
C1301880 (UMLS CUI [1,4])
Drug era End Datetime
Item
Drug era End Datetime
datetime
C0013223 (UMLS CUI [1,1])
C1948053 (UMLS CUI [1,2])
C0806020 (UMLS CUI [1,3])
C1522314 (UMLS CUI [1,4])
Drug exposure count
Item
Drug exposure count
integer
C0332157 (UMLS CUI [1,1])
C0013227 (UMLS CUI [1,2])
C0750480 (UMLS CUI [1,3])
Gap days
Item
Gap days
integer
C0013227 (UMLS CUI [1,1])
C0332157 (UMLS CUI [1,2])
C3887622 (UMLS CUI [1,3])
C0439228 (UMLS CUI [1,4])
C0750480 (UMLS CUI [1,5])
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