Measurement properties and hierarchical item structure of the Epworth Sleepiness Scale in Parkinson's disease
Peter Hagell,Jan-Erik Broman +1 more
TLDR
This study provides an evidence base for using the Epworth Sleepiness Scale in PD by demonstrating good psychometric properties and a stable hierarchical item structure and addition of new items and use of Rasch scoring has potential to further enhance the clinical usefulness of the ESS.Abstract:
The aim of this work was to evaluate the measurement properties and hierarchical item structure of the Epworth Sleepiness Scale (ESS) in patients with Parkinson's disease (PD). Data were taken from a cross-sectional study regarding fatigue and sleep-related aspects of PD. One hundred and eighteen consecutive patients with neurologist-diagnosed PD without significant co-morbidities (54% men; mean age, 64 years; mean PD duration, 8.4 years) from four Swedish neurological outpatient clinics participated. The ESS displayed good data quality with few missing items (0-2.5%): good reliability (Cronbach's alpha, 0.84), marginal floor and no ceiling effects (1.7% and 0% respectively), and differentiated between those reporting problems staying awake during the past month and those who did not. Item-total correlations, factor and Rasch analyses indicated that items tap a single underlying construct. Rasch analysis supported basic rating scale assumptions and demonstrated an item hierarchy similar to that previously found in patients with other sleep disorders. Gaps in the levels of sleep propensity covered by ESS items and their response options were identified at the higher and lower ends of the underlying sleepiness continuum. This study provides an evidence base for using the ESS in PD by demonstrating good psychometric properties and a stable hierarchical item structure. However, addition of new items and use of Rasch scoring has potential to further enhance the clinical usefulness of the ESS.read more
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Relationships Between the Pittsburgh Sleep Quality Index (PSQI), Epworth Sleepiness Scale (ESS), and Clinical/Polysomnographic Measures in a Community Sample
Daniel J. Buysse,M Hall,Patrick J. Strollo,Thomas W. Kamarck,Jane F. Owens,Laisze Lee,Steven E. Reis,Karen A. Matthews,Karen A. Matthews +8 more
TL;DR: The PSQI is more closely related to psychological symptom ratings and sleep diary measures than the ESS, and these instruments are not likely to be useful as screening measures for polysomnographic sleep abnormalities.
Journal ArticleDOI
Evidence‐Based Recommendations for the Assessment and Management of Sleep Disorders in Older Persons
Harrison G. Bloom,Harrison G. Bloom,Imran Ahmed,Cathy A. Alessi,Cathy A. Alessi,Sonia Ancoli-Israel,Daniel J. Buysse,Meir H. Kryger,Barbara Phillips,Michael J. Thorpy,Michael J. Thorpy,Michael V. Vitiello,Phyllis C. Zee +12 more
TL;DR: The goals of this article are to help guide clinicians in their general understanding of sleep problems in older persons, examine specific sleep disorders that occur in older Persons, and suggest evidence‐ and expert‐based recommendations for the assessment and treatment of sleep disorders in older people.
Journal ArticleDOI
Caffeine for treatment of Parkinson disease: A randomized controlled trial
Ronald B. Postuma,Anthony E. Lang,Renato P. Munhoz,Katia Charland,Amélie Pelletier,Mariana Moscovich,L. Filla,Debora Zanatta,Silvia Rios Romenets,Robert Altman,Rosa Chuang,Binit B. Shah +11 more
TL;DR: This study provides Class I evidence that caffeine, up to 200 mg BID for 6 weeks, had no significant benefit on excessive daytime sleepiness in patients with PD and suggests that a larger long-term trial of caffeine is warranted.
Journal ArticleDOI
Development of a Japanese version of the Epworth Sleepiness Scale (JESS) based on item response theory.
Misa Takegami,Yoshimi Suzukamo,Takafumi Wakita,Hiroyuki Noguchi,Kazuo Chin,Hiroshi Kadotani,Yuichi Inoue,Yasunori Oka,Takaya Nakamura,Joseph Green,Murray W. Johns,Shunichi Fukuhara +11 more
TL;DR: In Japan, the developer-authorized Japanese version of the Epworth Sleepiness Scale provides reliable and valid information on daytime sleepiness and researchers who use the ESS with other populations should combine their knowledge of local conditions with the results of psychometric tests.
Journal ArticleDOI
A systematic review of the literature on disorders of sleep and wakefulness in Parkinson's disease from 2005 to 2015
TL;DR: A systematic review of the literature published from 2005 to 2015 on the following disorders of sleep and wakefulness in Parkinson's disease: REM sleep behavior disorder, insomnia, nocturia, restless legs syndrome and periodic limb movements, sleep disordered breathing, excessive daytime sleepiness, and circadian rhythm disorders.
References
More filters
Journal ArticleDOI
“Mini-mental state”: A practical method for grading the cognitive state of patients for the clinician
Marshal F. Folstein,Marshal F. Folstein,Susan E B Folstein,Susan E B Folstein,Paul R. McHugh,Paul R. McHugh +5 more
TL;DR: A simplified, scored form of the cognitive mental status examination, the “Mini-Mental State” (MMS) which includes eleven questions, requires only 5-10 min to administer, and is therefore practical to use serially and routinely.
A practical method for grading the cognitive state of patients for the clinician
TL;DR: The Mini-Mental State (MMS) as mentioned in this paper is a simplified version of the standard WAIS with eleven questions and requires only 5-10 min to administer, and is therefore practical to use serially and routinely.
Journal ArticleDOI
The Pittsburgh Sleep Quality Index: A new instrument for psychiatric practice and research.
TL;DR: The clinimetric and clinical properties of the PSQI suggest its utility both in psychiatric clinical practice and research activities.
Journal ArticleDOI
A new method for measuring daytime sleepiness: the Epworth sleepiness scale.
TL;DR: The development and use of a new scale, the Epworth sleepiness scale (ESS), is described, which is a simple, self-administered questionnaire which is shown to provide a measurement of the subject's general level of daytime sleepiness.
Journal ArticleDOI
Parkinsonism: Onset, progression, and mortality
Margaret M. Hoehn,Melvin D. Yahr +1 more
TL;DR: Controversy over the effectiveness of therapeutic measures for parkinsonism is due partially to this wide variability and to the paucity of clinical information about the natural history of the syndrome.