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Contextual factors and perceived self-reported sleepiness: a preliminary report
Amir Sharafkhaneh1, Max Hirshkowitz
1Sleep Disorders and Research Center, Veterans Affairs Medical Center and Baylor College of Medicine, Sleep Center 116A, 2002 Holcombe Boulevard, Houston, TX 77030, USA. amirs@bcm.tmc.edu
Sleep Medicine
|November 1, 2003
Summary
Contextual factors like position and location significantly influence self-reported sleepiness. However, this effect lessens as an individual
Area of Science:
- Sleep research
- Psychology
- Medical diagnostics
Background:
- Self-reported sleepiness is a key indicator in various health assessments.
- Understanding factors influencing these reports is crucial for accurate diagnosis.
Purpose of the Study:
- To investigate if contextual elements (position, location, interest) impact sleepiness ratings.
- To examine the interplay between an individual's baseline sleepiness and contextual influences.
Main Methods:
- Prospective survey design utilizing a custom questionnaire.
- Inclusion of diverse populations: general, geriatric, medical residents, and sleep-clinic patients (n=146).
- Administration of the Epworth Sleepiness Scale (ESS) alongside the contextual questionnaire.
Main Results:
- Significant variations in self-reported sleepiness were observed when contextual factors were altered (P<0.01).
- The impact of contextual factors on sleepiness ratings decreased as individuals reported higher levels of sleepiness (based on ESS scores).
Conclusions:
- Contextual factors demonstrably influence self-reported sleepiness, particularly in less sleepy individuals.
- Clarifying context may enhance the sensitivity of sleepiness assessments for alert individuals.
- Contextual details offer limited additional value for already sleepy patients.
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