Stopping rules for surveys with multiple waves of nonrespondent follow-up.

  title={Stopping rules for surveys with multiple waves of nonrespondent follow-up.},
  author={R Sowmya Rao and Mark E. Glickman and Robert J Glynn},
  journal={Statistics in medicine},
  volume={27 12},
In surveys with multiple waves of follow-up, nonrespondents to the first wave are sometimes followed intensively but this does not guarantee an increase in the response rate or an appreciable change in the estimate of interest. Most prior research has focused on stopping rules for Phase I clinical trials. To our knowledge there are no standard methods to stop follow-up in observational studies. Previous research suggests optimal stopping strategies where decisions are based on achieving a given… CONTINUE READING

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