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Measuring Neural Mechanisms Underlying Sleep-Dependent Memory Consolidation During Naps in Early Childhood

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Published on: October 2, 2019

Validation of self-reported sleep against actigraphy.

Jennifer Girschik¹, Lin Fritschi, Jane Heyworth

¹Western Australian Institute for Medical Research, The University of Western Australia, Nedlands, Australia. jennifer.girschik@uwa.edu.au

Journal of Epidemiology

|August 2, 2012

Summary

Short sleep questionnaires used in population studies show poor agreement with objective sleep measures from actigraphy. This finding impacts the reliability of sleep data in large-scale epidemiologic research.

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Area of Science:

Sleep Science
Epidemiology
Biomedical Research

Background:

Self-report sleep questionnaires are practical for large population studies.
Existing validated sleep questionnaires are often too lengthy for epidemiologic use.
A concise 3-item sleep questionnaire is commonly employed in such studies.

Purpose of the Study:

To evaluate the concordance between a brief, self-reported sleep questionnaire and objective sleep measures.
To assess the suitability of short sleep questionnaires for epidemiologic research.

Main Methods:

Participants (Western Australian women, 18-80 years) completed a sleep questionnaire.
Objective sleep data were collected using wrist actigraphy for 7 nights.
Subjective reports were compared with actigraphy data using weighted kappa and delta statistics.

Main Results:

The 3-item sleep questionnaire demonstrated poor agreement with actigraphy-derived sleep measures.
Kappa values ranged from -0.19 to 0.14, indicating low concordance.

Conclusions:

Brief sleep questionnaires commonly used in epidemiologic studies do not reliably reflect objective sleep patterns.
The findings question the validity of sleep data obtained through such methods in large-scale research.
Further research is needed to establish appropriate methods for measuring sleep as an epidemiologic risk factor.