urn:ddi:de.dezim:2a51a3ed-df1d-4dff-aeaa-eaafbc9d8199:1 de.dezim 2a51a3ed-df1d-4dff-aeaa-eaafbc9d8199 1 extension:ShouldCalculateFrequenciesForValidValues False extension:ShouldCalculateFrequenciesForInvalidValues True el-masri@dezim-institut.de First Version ed_response_class Edition: Teilnahmequote Klassenebene Edition: Response rate at class level Float