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How were the individual screening sites and children/adolescents selected?

05.12.2017

To ensure the survey's representativeness the children and adolescents were selected in a two-step procedure. First, 167 communities were selected to take adequate account of all the federal states (Länder) and community sizes and to ensure a representative portrayal of those communities and the settlement structures in Germany. A screening site is thus weiterlesen
representative of communities with a specific population in a given federal state.
In the second step, a random sampling of children and adolescents was taken from the population registers at residents registration offices.

 

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Source URL (modified on 12.12.2017):https://www.umweltbundesamt.de/en/service/ask-uba/how-were-the-individual-screening-sites