Characteristics of insomnia in the United States: results of the 1991 National Sleep Foundation Survey. I.

@article{AncoliIsrael1999CharacteristicsOI,
  title={Characteristics of insomnia in the United States: results of the 1991 National Sleep Foundation Survey. I.},
  author={Sonia Ancoli-Israel and Thomas Roth},
  journal={Sleep},
  year={1999},
  volume={22 Suppl 2},
  pages={S347-53}
}
The National Sleep Foundation in conjunction with the Gallup Organization conducted telephone interviews with a sample of Americans (N = 1000) to examine the prevalence and nature of difficulty with sleep. Consistent with other national studies, about one-third of Americans reported some type of sleep problem. Approximately one in four reported occasional insomnia while 9% reported that their sleep difficulty occurred on a regular nightly basis. The problem most frequently reported by… CONTINUE READING
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