<ddi:Fragment xmlns:ddi="ddi:instance:3_1" xmlns:r="ddi:reusable:3_1"><l:Variable id="5433bdb3-718e-4c4c-8ed3-bf972dea41b3" version="1.0.0" versionDate="2025-05-13T14:38:29" xmlns:l="ddi:logicalproduct:3_1" xmlns:r="ddi:reusable:3_1"><r:UserID type="11179-IRDI">de.dezim:5433bdb3-718e-4c4c-8ed3-bf972dea41b3:1</r:UserID><r:VersionResponsibility>el-masri@dezim-institut.de</r:VersionResponsibility><r:VersionRationale xml:lang="de">Version 1</r:VersionRationale><l:VariableName xml:lang="de">vac_exp</l:VariableName><r:Label xml:lang="de">Have you received a Covid-19 vaccine?</r:Label><l:ResponseUnit /><r:AnalysisUnit /><l:Representation additivity="NonAdditive"><l:CodeRepresentation blankIsMissingValue="false"><r:CodeSchemeReference><r:ID>13195efd-5fd3-4d9f-9bc7-6220cb5a2eaf</r:ID><r:IdentifyingAgency>de.dezim</r:IdentifyingAgency><r:Version>1</r:Version></r:CodeSchemeReference></l:CodeRepresentation></l:Representation></l:Variable></ddi:Fragment>