Outcome-dependent sampling designs are strategic methodologies in longitudinal research that prioritise the selection of study subjects based on observed outcomes. Rather than relying on random ...

In this paper we consider a family of sampling designs for which increasing first-order inclusion probabilities imply, in a specific sense, increasing conditional inclusion probabilities. It is proved ...

The data in this Pew Research Center report is drawn from a national cross-sectional survey conducted by Westat. The sampling design of the survey was an address-based sampling (ABS) approach, ...