5 Wellen Rotationssystem ja ja ja ja ja ja ja Nachträgliche Schichtung ###>5 waves Rotation scheme yes yes yes yes yes yes yes Post stratification sex, age Variables of post group, regionstratification sex, age,region sex, agegroup, region,nationality sex, age group, region,registered unemployment sex, age group, sectorof activity,registeredunemployment sex, age group, nationality, size of household sex, agegroup,region, ethnicbackground, marital status