Access and validation

Governance details

Documents or webpages that describe the overall governance of the data source and processes and procedures for data capture and management, data quality check and validation results (governing data access or utilisation for research purposes).
https://www.iadb.nl/

Biospecimen access

Are biospecimens available in the data source (e.g., tissue samples)?

Yes

Biospecimen access conditions

IADB.nl is linked to Lifelines in the Pharmlines Initiative

Access to subject details

Can individual patients/practitioners/practices included in the data source be contacted?

No

Description of data collection

The data is sent to us by the pharmacists on a monthly basis.
Event triggering registration

Event triggering registration of a person in the data source

Practice registration

Event triggering de-registration of a person in the data source

Loss to follow up

Event triggering creation of a record in the data source

Patient getting a prescription
Data source linkage

Linkage

Is the data source described created by the linkage of other data sources (prelinked data source) and/or can the data source be linked to other data source on an ad-hoc basis?

Yes

Linkage description, possible linkage

Linkage to Lifelines. Linkage is done by the CBS (www.cbs.nl) that act as a TTP.

Linked data source 1

Pre linked

Is the data source described created by the linkage of other data sources?

No

Data source, other

Lifelines (https://lifelines.nl)

Linkage strategy

Deterministic

Linkage variable

date of birth, gender, postal code (4 digits)

Linkage completeness

94% of the patients can be linked to the CBS, of that 80% can be linked to Lifelines.
Data management specifications that apply for the data source

Data source refresh

Yearly

Informed consent for use of data for research

Other

Informed consent, other

There is a committee to evaluate requests for data access

Possibility of data validation

Can validity of the data in the data source be verified (e.g., access to original medical charts)?

No

Data source preservation

Are records preserved in the data source indefinitely?

Yes

Approval for publication

Is an approval needed for publishing the results of a study using the data source?

Yes

Data source last refresh

Common Data Model (CDM) mapping

CDM mapping

Has the data source been converted (ETL-ed) to a common data model?

No