Quality of Life Research

, Volume 14, Issue 8, pp 1943–1952 | Cite as

Psychometric Evaluation of the Chinese Version of the Pittsburgh Sleep Quality Index (CPSQI) in Primary Insomnia and Control Subjects

  • Pei-Shan TsaiEmail author
  • Shu-Yi Wang
  • Mei-Yeh Wang
  • Chein-Tien Su
  • Tsung-Tsair Yang
  • Chun-Jen Huang
  • Su-Chen Fang
Brief communication


In order to effectively study the population experiencing insomnia, it is important to identify reliable and valid tools to measure sleep that can be administered in the home setting. The purpose of this study was to assess psychometric properties for the Chinese version of the Pittsburgh Sleep Quality Index (CPSQI) in community-dwelling adults with primary insomnia. The CPSQI had an overall reliability coefficient of 0.82 –0.83 for all subjects. ‘Subjective sleep quality’ was the component most highly correlated with the global score. Overall, the CPSQI showed acceptable test–retest reliability over a 14- to 21-day interval with a coefficient of 0.85 for all subjects and 0.77 for primary insomniacs. The two contrasting groups had significantly different global and component scores. A CPSQI of greater than 5 yielded a sensitivity and specificity of 98 and 55% in primary insomniacs vs. controls. A CPSQI of greater than 6 resulted in a sensitivity and specificity of 90 and 67%. Results suggest that the CPSQI is a psychometrically sound measure of sleep quality and disturbance for patients with primary insomnia. It may not be an effective screening tool because of its low specificity, but it can be a sensitive, reliable, and valid outcome assessment tool for use in community-based studies of primary insomnia


Pittsburgh Sleep Quality Index Primary insomnia Psychometric properties 


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  1. 1.
    Espie, CA. 2002Insomnia: Conceptual issues in the development, persistence, and treatment of sleep disorder in adultsAnnu Rev Psychol53215243CrossRefPubMedGoogle Scholar
  2. 2.
    Ancoli-Israel, S, Roth, T. 1999Characteristics of insomnia in the United States: Results of the 1991 National Sleep Foundation SurveyI. Sleep22S347S353Google Scholar
  3. 3.
    Li, CY, Chen, PC, Sung, FC, Lin, RS. 2002Residential exposure to power frequency magnetic field and sleep disorders among women in an urban community of northern TaiwanSleep25428432PubMedGoogle Scholar
  4. 4.
    Zammit, GK, Weiner, J, Damato, N, Sillup, GP, McMillan, CA. 1999Quality of life in people with insomniaSleep22S37985PubMedGoogle Scholar
  5. 5.
    Leger, D, Scheuermaier, K, Philip, P, Paillard, M, Guilleminault, C. 2001SF-36: Evaluation of quality of life in severe and mild insomniacs compared with good sleepersPsychosom Med634955PubMedGoogle Scholar
  6. 6.
    6 Morin, CM, Hauri, PJ, Espie, CA, Spielman, AJ, Buysse, DJ, Bootzin, RR. 1999Nonpharmacologic treatment of chronic insomnia. An American Academy of Sleep Medicine reviewSleep2211341156PubMedGoogle Scholar
  7. 7.
    Smith, MT, Perlis, ML, Park, A,  et al. 2002Comparative meta-analysis of pharmacotherapy and behavior therapy for persistent insomniaAm J Psychiatry159511CrossRefPubMedGoogle Scholar
  8. 8.
    Buysse, DJ, Reynolds, CF,III, Monk, TH, Berman, SR, Kupfer, DJ. 1989The Pittsburgh Sleep Quality Index: A new instrument for psychiatric practice and researchPsychiatry Res28193213CrossRefPubMedGoogle Scholar
  9. 9.
    Buysse, DJ, Reynolds, CF,III, Monk, TH, Hoch, CC, Yeager, AL, Kupfer, DJ. 1991Quantification of subjective sleep quality in healthy elderly men and women using the Pittsburgh Sleep Quality Index (PSQI)Sleep14331338PubMedGoogle Scholar
  10. 10.
    Carpenter, JS, Andrykowski, MA. 1998Psychometric evaluation of the Pittsburgh Sleep Quality IndexJ Psychosom Res45513CrossRefPubMedGoogle Scholar
  11. 11.
    Backhaus, J, Junghanns, K, Broocks, A, Riemann, D, Hohagen, F. 2002Test–retest reliability and validity of the Pittsburgh Sleep Quality Index in primary insomniaPsychosom Res53737740CrossRefGoogle Scholar
  12. 12.
    American Psychology Association1994Diagnosis and Statistical Manual of Mental Disorders4American Psychiatric AssociationWashington, D. C.551607Google Scholar
  13. 13.
    Cheng, TA, Williams, P. 1986The design and development of a screening questionnaire (CHQ) for use in community studies of mental disorders in TaiwanPsychol Med16415422PubMedGoogle Scholar
  14. 14.
    Sheehan, DV, Lecrubier, Y, Sheehan, KH,  et al. 1998The Mini-International Neuropsychiatric Interview (M.I.N.I.): The development and validation of a structured diagnostic psychiatric interview for DSM-IV and ICD-10J Clin Psychiatry592233Google Scholar
  15. 15.
    Taiwanese Society of Psychiatry2001The Mini International Neuropsychiatric Interview (MINI) Taiwan version 2.0.0Taiwanese Society of PsychiatryTaipei, TaiwanGoogle Scholar
  16. 16.
    Cheng, TA, Wu, JT, Chong, MY, Williams, P. 1990Internal consistency and factor structure of the Chinese Health QuestionnaireActa Psychiatr Scand82304308PubMedGoogle Scholar
  17. 17.
    Chen, NH, Johns, MW, Li, HY,  et al. 2002Validation of a Chinese version of the Epworth sleepiness scaleQual Life Res11817821CrossRefPubMedGoogle Scholar
  18. 18.
    Hoddes, E, Zarcone, V, Smythe, H, Phillips, R, Dement, WC. 1973Quantification of sleepiness: A new approachPsychophysiology10431436PubMedGoogle Scholar
  19. 19.
    Rosenthal, LD, Meixner, RM. 2003Psychological status and levels of sleepiness-alertness among patients with insomniaCNS Spectr8114118PubMedGoogle Scholar
  20. 20.
    Roth, T, Roehrs, T. 2003Insomnia: Epidemiology, characteristics, and consequencesClin Cornerstone5515CrossRefPubMedGoogle Scholar
  21. 21.
    Doi, Y, Minowa, M, Uchiyama, M,  et al. 2000Psychometric assessment of subjective sleep quality using the Japanese version of the Pittsburgh Sleep Quality Index (PSQI-J) in psychiatric disordered and control subjectsPsychiatry Res97165172CrossRefPubMedGoogle Scholar

Copyright information

© Springer 2005

Authors and Affiliations

  • Pei-Shan Tsai
    • 1
    Email author
  • Shu-Yi Wang
    • 1
  • Mei-Yeh Wang
    • 1
  • Chein-Tien Su
    • 1
  • Tsung-Tsair Yang
    • 1
  • Chun-Jen Huang
    • 1
  • Su-Chen Fang
    • 1
  1. 1.College of NursingTaipei Medical UniversityTaipei 110Taiwan

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