The Berlin Aging Study II (BASE-II) is a multidisciplinary study that allows for the investigation of how a multitude of health status factors as well as many other social and economic outcomes interplay. The sample consists of 1,600 participants aged 60 to 80, and 600 participants aged 20 to...

With the pilot study Living outside Germany, the longitudinal German Socio-Economic Panel Study (SOEP) ventures into completely uncharted methodological territory by attempting to locate the addresses of former participants in the German household panel study SOEP who have since immigrated...

This study examines the phenomenon of nonresponse in the first wave of a refresher sample (subsample H) of the German Socio-Economic Panel Study (SOEP). Our first step is to link additional (commercial) microgeographic data on the immediate neighborhoods of the households visited by...

The results of a resurvey of non-respondents to the SOEP study carried out in 2006 show that this special effort of reinterviewing was relatively ineffective in two respects. First, the rate of successful conversions of passive to active respondents was low (less than 20 percent). Second, the...

Like many medical studies, the Berlin Aging Study II (BASE‐II) is based on a non‐random "convenience sample" of self‐recruited participants. To study processes of selectivity in BASE‐II, we used an identical questionnaire to compare BASE‐II with a large, representative reference study,...