Validity and reliability of the Taiwanese version of the Pittsburgh Sleep Quality Index in cancer patients

Jann Inn Tzeng, Ya Wen Fu, Chia-Chin Lin

Research output: Contribution to journalArticle

36 Citations (Scopus)

Abstract

Background: Sleep disturbance remains a common symptom among cancer patients. Assessment of sleep disturbance in cancer patients is hindered by infrequent use of standardized tools for sleep management. Objectives: The purposes of this study were to validate the Taiwanese version of the Pittsburgh Sleep Quality Index (PSQI-T) and to determine detection cut-off points in cancer patients. Design: A cross-sectional and descriptive correlational design. Participants: A sample of 205 Taiwanese patients with various cancer diagnoses. Methods: The survey included the Pittsburgh Sleep Quality Index-Taiwanese version, the MD Anderson Symptom Inventory-Taiwanese version, the Brief Fatigue Inventory-Taiwanese version, the seven-day sleep log, and Manual of Mental Disorders, Fourth Edition. Results: The internal consistency Cronbach's alpha for the PSQI was 0.79. Test-retest reliability was 0.91 for the global score over a 20- to 28-day interval in a sample of 16 patients. Construct validity was established by a significant relationship of the PSQI-T global score to the total symptom severity score and the fatigue severity score. Convergent validity was examined by correlating the PSQI-T scores and scores of the DSM-IV and scores on the seven-day sleep log. Known-group validity was established by comparing PSQI-T scores for patients having low fatigue levels and those having high fatigue levels. Receiver-operating characteristic (ROC) curves were used to determine the detection cut-off points. Conclusions: We found that a PSQI-T global score of 8 generates the best sensitivity and specificity for measuring sleep disturbance in cancer patients. The PSQI-T is a reliable, valid, and sensitive instrument for measuring sleep quality among Taiwanese cancer patients.

Original languageEnglish
Pages (from-to)102-108
Number of pages7
JournalInternational Journal of Nursing Studies
Volume49
Issue number1
DOIs
Publication statusPublished - Jan 2012

Fingerprint

Reproducibility of Results
Sleep
Neoplasms
Fatigue
Equipment and Supplies
Mental Disorders
ROC Curve
Diagnostic and Statistical Manual of Mental Disorders

Keywords

  • Measurement
  • Reliability
  • Sensitivity
  • Sleep quality
  • Taiwan
  • Validation
  • Validity

ASJC Scopus subject areas

  • Nursing(all)

Cite this

Validity and reliability of the Taiwanese version of the Pittsburgh Sleep Quality Index in cancer patients. / Tzeng, Jann Inn; Fu, Ya Wen; Lin, Chia-Chin.

In: International Journal of Nursing Studies, Vol. 49, No. 1, 01.2012, p. 102-108.

Research output: Contribution to journalArticle

@article{90eb7b120d3847fca6bb991a3ef84553,
title = "Validity and reliability of the Taiwanese version of the Pittsburgh Sleep Quality Index in cancer patients",
abstract = "Background: Sleep disturbance remains a common symptom among cancer patients. Assessment of sleep disturbance in cancer patients is hindered by infrequent use of standardized tools for sleep management. Objectives: The purposes of this study were to validate the Taiwanese version of the Pittsburgh Sleep Quality Index (PSQI-T) and to determine detection cut-off points in cancer patients. Design: A cross-sectional and descriptive correlational design. Participants: A sample of 205 Taiwanese patients with various cancer diagnoses. Methods: The survey included the Pittsburgh Sleep Quality Index-Taiwanese version, the MD Anderson Symptom Inventory-Taiwanese version, the Brief Fatigue Inventory-Taiwanese version, the seven-day sleep log, and Manual of Mental Disorders, Fourth Edition. Results: The internal consistency Cronbach's alpha for the PSQI was 0.79. Test-retest reliability was 0.91 for the global score over a 20- to 28-day interval in a sample of 16 patients. Construct validity was established by a significant relationship of the PSQI-T global score to the total symptom severity score and the fatigue severity score. Convergent validity was examined by correlating the PSQI-T scores and scores of the DSM-IV and scores on the seven-day sleep log. Known-group validity was established by comparing PSQI-T scores for patients having low fatigue levels and those having high fatigue levels. Receiver-operating characteristic (ROC) curves were used to determine the detection cut-off points. Conclusions: We found that a PSQI-T global score of 8 generates the best sensitivity and specificity for measuring sleep disturbance in cancer patients. The PSQI-T is a reliable, valid, and sensitive instrument for measuring sleep quality among Taiwanese cancer patients.",
keywords = "Measurement, Reliability, Sensitivity, Sleep quality, Taiwan, Validation, Validity",
author = "Tzeng, {Jann Inn} and Fu, {Ya Wen} and Chia-Chin Lin",
year = "2012",
month = "1",
doi = "10.1016/j.ijnurstu.2011.08.004",
language = "English",
volume = "49",
pages = "102--108",
journal = "International Journal of Nursing Studies",
issn = "0020-7489",
publisher = "Elsevier Limited",
number = "1",

}

TY - JOUR

T1 - Validity and reliability of the Taiwanese version of the Pittsburgh Sleep Quality Index in cancer patients

AU - Tzeng, Jann Inn

AU - Fu, Ya Wen

AU - Lin, Chia-Chin

PY - 2012/1

Y1 - 2012/1

N2 - Background: Sleep disturbance remains a common symptom among cancer patients. Assessment of sleep disturbance in cancer patients is hindered by infrequent use of standardized tools for sleep management. Objectives: The purposes of this study were to validate the Taiwanese version of the Pittsburgh Sleep Quality Index (PSQI-T) and to determine detection cut-off points in cancer patients. Design: A cross-sectional and descriptive correlational design. Participants: A sample of 205 Taiwanese patients with various cancer diagnoses. Methods: The survey included the Pittsburgh Sleep Quality Index-Taiwanese version, the MD Anderson Symptom Inventory-Taiwanese version, the Brief Fatigue Inventory-Taiwanese version, the seven-day sleep log, and Manual of Mental Disorders, Fourth Edition. Results: The internal consistency Cronbach's alpha for the PSQI was 0.79. Test-retest reliability was 0.91 for the global score over a 20- to 28-day interval in a sample of 16 patients. Construct validity was established by a significant relationship of the PSQI-T global score to the total symptom severity score and the fatigue severity score. Convergent validity was examined by correlating the PSQI-T scores and scores of the DSM-IV and scores on the seven-day sleep log. Known-group validity was established by comparing PSQI-T scores for patients having low fatigue levels and those having high fatigue levels. Receiver-operating characteristic (ROC) curves were used to determine the detection cut-off points. Conclusions: We found that a PSQI-T global score of 8 generates the best sensitivity and specificity for measuring sleep disturbance in cancer patients. The PSQI-T is a reliable, valid, and sensitive instrument for measuring sleep quality among Taiwanese cancer patients.

AB - Background: Sleep disturbance remains a common symptom among cancer patients. Assessment of sleep disturbance in cancer patients is hindered by infrequent use of standardized tools for sleep management. Objectives: The purposes of this study were to validate the Taiwanese version of the Pittsburgh Sleep Quality Index (PSQI-T) and to determine detection cut-off points in cancer patients. Design: A cross-sectional and descriptive correlational design. Participants: A sample of 205 Taiwanese patients with various cancer diagnoses. Methods: The survey included the Pittsburgh Sleep Quality Index-Taiwanese version, the MD Anderson Symptom Inventory-Taiwanese version, the Brief Fatigue Inventory-Taiwanese version, the seven-day sleep log, and Manual of Mental Disorders, Fourth Edition. Results: The internal consistency Cronbach's alpha for the PSQI was 0.79. Test-retest reliability was 0.91 for the global score over a 20- to 28-day interval in a sample of 16 patients. Construct validity was established by a significant relationship of the PSQI-T global score to the total symptom severity score and the fatigue severity score. Convergent validity was examined by correlating the PSQI-T scores and scores of the DSM-IV and scores on the seven-day sleep log. Known-group validity was established by comparing PSQI-T scores for patients having low fatigue levels and those having high fatigue levels. Receiver-operating characteristic (ROC) curves were used to determine the detection cut-off points. Conclusions: We found that a PSQI-T global score of 8 generates the best sensitivity and specificity for measuring sleep disturbance in cancer patients. The PSQI-T is a reliable, valid, and sensitive instrument for measuring sleep quality among Taiwanese cancer patients.

KW - Measurement

KW - Reliability

KW - Sensitivity

KW - Sleep quality

KW - Taiwan

KW - Validation

KW - Validity

UR - http://www.scopus.com/inward/record.url?scp=84855866359&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84855866359&partnerID=8YFLogxK

U2 - 10.1016/j.ijnurstu.2011.08.004

DO - 10.1016/j.ijnurstu.2011.08.004

M3 - Article

VL - 49

SP - 102

EP - 108

JO - International Journal of Nursing Studies

JF - International Journal of Nursing Studies

SN - 0020-7489

IS - 1

ER -