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Cited by 59Temporomandibular Joint DisordersSleep and related disordersObstructive Sleep Apnea Research

Exploration of dimensionality and psychometric properties of the Pittsburgh Sleep Quality Index in cases with temporomandibular disorders

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Rener-Sitar, Ksenija, John, Mike T, Bandyopadhyay, Dipankar, Howell, Michael J, Schiffman, Eric L·2014·Health and Quality of Life Outcomes
DOI 10.1186/1477-7525-12-10PMC PMC3902412
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Abstract

BACKGROUND: This study assessed the dimensional structure of sleep quality with the Pittsburgh Sleep Quality Index (PSQI) and investigated its psychometric properties in cases with temporomandibular disorders (TMD). METHODS: A convenience sample of 609 TMD cases (age: 37.1 ± 13.1 yrs, 18-67 yrs, 85% female) of the multi-center Validation Project meeting Research Diagnostic Criteria for Temporomandibular Disorders (RDC/TMD) and with sufficient PSQI data were included in this study. To investigate PSQI scores' dimensionality, exploratory factor analysis was used. Factors were identified using the Scree plot. To investigate internal consistency, Cronbach's alpha was calculated. Analyses were separately performed for TMD cases with (N = 496) and TMD cases withouta pain-related diagnosis (N = 113). RESULTS: The mean PSQI score for all TMD cases was 7.1 ± 4.0 units, range: 0-19. The exploratory factor analysis identified one factor for cases with at least one pain-related TMD diagnosis as well as one factor for cases with a pain-free TMD diagnosis that explained 41% of the variance in cases with pain-related TMD and 37% in cases with pain-free TMD. Internal consistency for PSQI scores was alpha of 0.75 in cases with pain-related TMD, alpha of 0.66 in cases with pain-free TMD and alpha = 0.75 for all TMD cases. CONCLUSIONS: Sleep quality in TMD patients is a unidimensional construct and can therefore be represented by one summary score; a finding that is in line with previous reports in TMD patients.

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Cited by

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Authors
Rener-Sitar, K., John, M. T., Bandyopadhyay, D., Howell, M. J., & Schiffman, E. L.
Affiliations
University of Minnesota (US)
ORCID
Venue
Health and Quality of Life Outcomes
Publisher
Springer Science and Business Media LLC
Published
2014
Volume
12
Issue
1
Pages
10
ISSN
1477-7525 (ISSN-L)
DOI
10.1186/1477-7525-12-10
PMC
PMC3902412
OpenAlex
W2144754401
Cited by
59
References
5
Citations by year
2026: 1 · 2025: 3 · 2024: 2 · 2023: 5 · 2022: 10 · 2021: 4 · 2020: 6 · 2019: 3 · 2018: 6 · 2017: 6 · 2016: 8 · 2015: 4 · 2014: 1
FWCI
11.45
Type
journal article
Language
en
Open access
Licence
cc-by
Locations
  • Health and Quality of Life Outcomes (publishedVersion, cc-by)
  • Europe PMC (PubMed Central) (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
Funders
  • University of Minnesota
  • Agencja Badań Medycznych
  • National Institutes of Health
  • National Institute of Dental and Craniofacial Research (U01DE013331)
Topics
  • Health Sciences › Health Professions › Complementary and Manual Therapy › Temporomandibular Joint Disorders
  • Social Sciences › Psychology › Experimental and Cognitive Psychology › Sleep and related disorders
  • Health Sciences › Medicine › Physiology › Obstructive Sleep Apnea Research
Keywords
Pittsburgh Sleep Quality Index, temporomandibular disorders, sleep quality, dimensionality, psychometric properties, factor structure, internal consistency, summary scores
MeSH terms
Adolescent, Adult, Aged, Factor Analysis, Statistical, Female, Humans, Male, Middle Aged, Pain, Psychometrics, Quality of Life, Surveys and Questionnaires, Sleep, Sleep Wake Disorders, Temporomandibular Joint Disorders, Reproducibility of Results, Young Adult

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