Sampling rare and elusive populations.

@article{Sudman1988SamplingRA,
  title={Sampling rare and elusive populations.},
  author={Seymour Sudman and Monroe G. Sirken and Cherry Cowan},
  journal={Science},
  year={1988},
  volume={240 4855},
  pages={991-6}
}
The sampling of rare and elusive populations is difficult because the costs of locating such populations are substantial and can exceed actual interviewing costs. There are efficient probability methods that have been developed recently that reduce these costs. If the special populations are geographically clustered, efficient sampling involves the rapid… CONTINUE READING