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Related Experiment Videos

Insomnia in central Pennsylvania.

E O Bixler1, A N Vgontzas, H-M Lin

  • 1Department of Psychiatry, Sleep Research and Treatment Center, Pennsylvania State University, College of Medicine, Hershey, PA, USA. eob1@psu.edu

Journal of Psychosomatic Research
|July 20, 2002
PubMed
Summary

Insomnia is strongly linked to mental health issues like depression, and also associated with female gender and minority status. Physical health conditions and sleep lab findings were less influential in this large public health study.

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Area of Science:

  • Public Health
  • Sleep Medicine
  • Psychiatry

Background:

  • Insomnia is a common sleep complaint with potential links to various health issues.
  • Understanding the independent predictors of insomnia is crucial for effective management.
  • Previous research has explored associations, but controlling for multiple factors in a general population is key.

Purpose of the Study:

  • To investigate the association between insomnia and physical/mental health symptoms.
  • To examine the relationship with objective sleep measures.
  • To control for demographic factors like age, gender, and BMI in a large general sample.

Main Methods:

  • A large random sample (N=16,583) of the general public was surveyed.
  • A subsample (N=1741) underwent a single-night sleep laboratory evaluation.

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  • Multivariate logistic regression was used to analyze associations, controlling for covariates.

    • Main Results:

    • The prevalence of insomnia was 7.5%, with an additional 22.4% reporting difficulty sleeping.
    • Depression emerged as the strongest predictor of insomnia, followed by female gender.
    • Minority status, hypertension, colitis, and anemia showed lesser independent associations.

    Conclusions:

    • Mental health variables are the primary independent predictors of insomnia complaints.
    • Insomnia is a symptom linked to a broad spectrum of mental and physical health conditions.
    • Primary sleep disorders like sleep apnea do not appear to be major contributors to insomnia.