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|Achieved Sample Size||482127|
ca. 26 %
Dwelling, Household, Persons
The Microcensus is a single-stage, stratified cluster sample with a uniform sampling fraction for all strata. As a rule, the sampling fraction is 1 %; it applies to all sampling units (sampling districts, dwellings, households, persons).
Because the selection probability of the Scientific Use File (SUF) basically remains constant at 70%, design weights can be created on the basis of the inverse of the sampling fraction of the Microcensus (1 %) and the Scientific Use File (70 %): w = 1 / (0.01 * 0.7).
From 2005 onwards, in addition to the standard weighting factors for annual averages there are also weighting factors for the quarterly samples, for the ad hoc modules and structural variables of the EU-LFS. Moreover, there are special weighting factors for additional programmes of the Microcensus (e.g., on the housing situation).