Factor structure of the Chinese version of the Pittsburgh Sleep Quality Index in breast cancer patients

Ho, Rainbow T. H.; Fong, Ted C. T.

doi:10.1016/j.sleep.2013.10.019

Cited by 85 publications

(74 citation statements)

References 25 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Factor analytical studies of the PSQI have mostly found a single factor although some studies have reported a three factor model [12][13][14][15]. In many studies ''use of sleep medications'' did not load well into the one factor model.…”

Section: Discussionmentioning

confidence: 99%

Validation of the Sinhala version of the Pittsburgh Sleep Quality Index

et al. 2016

View full text Add to dashboard Cite

Introduction Pittsburg Sleep Quality Index (PSQI) is a widely used standardized instrument to assess sleep quality in clinical and research settings. Objective of the study was to translate the PSQI into Sinhala language and validate using a combined qualitative and quantitative approach.Methods Every fifth patient aged 18-60 years who attended the out-patients department of a tertiary care hospital was recruited. PSQI was translated into Sinhala using a combined qualitative and quantitative approach. Internal consistency was measured using Cronbach's alpha. Construct validity was assessed by comparing the scores in patients who were identified as having depressive disorder according to the Centre for Epidemiologic Studies Depression Scale (CES-D) and those without depressive disorder.Results Forty-six participants with depression were compared with 159 non depressed controls. Mean PSQI component scores were significantly higher in depressed patients in 5 components. Factor analysis identified a single component explaining 53.53% of the variance. Cronbach's alpha of 0.85 indicated a high internal consistency. ConclusionsThe Sinhala translation of the PSQI is a valid and reliable tool to assess sleep quality.

show abstract

Section: Discussionmentioning

confidence: 99%

Validation of the Sinhala version of the Pittsburgh Sleep Quality Index

et al. 2016

View full text Add to dashboard Cite

show abstract

“…18 The model results are similar to previous factor analyses that also found that a 3-factor model (Sleep Efficiency, Perceived Sleep Quality, Daily Disturbances) best fit the data in depressed and non-depressed adults, 15 520 Nigerian university students, 13 135 post-renal transplant patients, 14 and 3,667 community-dwelling English and Spanish speaking Hispanic and non-Hispanic adults. 16 Conversely, the traditional 1-factor (Sleep Quality) and 2-factor models (Sleep Efficiency; Perceived Sleep Quality) consisted of samples of 197 Chinese women with breast cancer, 19 417 depressed and non-depressed older adults, 15 107 patients with rheumatoid arthritis, 17 and 1174 non-depressed breast cancer survivors. 18 Two of the prior studies also produced a better model fit by removing the sleep medication item during the analysis.…”

Section: Discussionmentioning

confidence: 99%

“…Sleep Efficiency, Perceived Sleep Quality, and Daytime Functioning) was a better fit to the data than a 1-factor global score for sleep quality. 13–16 One study found a 1-factor model (Sleep Quality) 19 and two studies reported 2-factor models (Sleep Efficiency, Perceived Sleep Quality) were most appropriate for the populations being studied. 17,18 The Otte et al study also found racial differences in a nested-model comparison of African American and Caucasian breast cancer survivors of Sleep Quality and Sleep Latency as well as Sleep Efficiency and Sleep Quality.…”

Section: Introductionmentioning

confidence: 99%

Confirmatory factor analysis of the Pittsburgh Sleep Quality Index in women with hot flashes

et al. 2015

View full text Add to dashboard Cite

Objective Women report poor sleep quality during various stages of the menopause transition and post-menopause, especially those with hot flashes. Sleep measurements vary widely due to the copious instruments available. The Pittsburgh Sleep Quality Index (PSQI) is a frequently used questionnaire that produces a single score for sleep quality. This one-factor structure has not received consistent support in the literature. The goal of this analysis was to determine the best factor structure of the PSQI in women with hot flashes. Methods A confirmatory factor analysis was conducted on the PSQI baseline data from three randomized controlled clinical trials enrolling peri- and postmenopausal women with hot flashes (N=849) from the Menopause Strategies: Finding Lasting Answers for Symptoms and Health (MsFLASH) network. Several a priori factor models were compared. Results One- and two-factor models did not fit the data. A three-factor model comprising Sleep Efficiency, Perceived Sleep Quality, and Daily Disturbance showed good fit; however, the sleep medication item was dropped due to poor fit and low rates of sleep medication use. The three-factor model was examined in African American (AA) and Caucasian subsamples and found to be similar in both groups; however, two items showed small group differences in strength as indicators. Conclusions Sleep quality in midlife women with hot flashes, as measured by the PSQI, appears to comprise three correlated factors. Minor measurement differences detected between groups are of research interest, but do not necessitate different scoring practices. Additional research is needed to further define sleep quality and its associations with health-related outcomes.

show abstract

“…Sleep quality was assessed with the Chinese Version of Pittsburgh Sleep Quality Index (PSQI) as reported in previous studies (Guo, Sun, Liu, & Wu, 2016;Ho & Fong, 2014). Regarding the structure and scoring system, the Chinese version of PSQI was the same with the traditional PSQI proposed by Buysse et al (Buysse et al, 1989) It is composed of seven different components including subjective sleep quality, sleep latency, habitual sleep efficiency, night-time disturbances, sleep duration, use of sleep medications and daytime dysfunction.…”

Section: Measurementsmentioning

confidence: 99%

“…The sum of these components generates a global score ranging from 0 to 21, with the higher score indicating the worse sleep quality. Poor sleep quality was defined as a global score of ≥ 8 (Guo et al, 2016;Ho & Fong, 2014). In addition to PSQI, Multidimensional Assessment of Fatigue Scale (MAF) was also completed by the patient to evaluate the extent of fatigue.…”

Section: Measurementsmentioning

confidence: 99%

Evaluation of sleep quality in adolescent patients with osteosarcoma using Pittsburgh Sleep Quality Index

Tao

et al. 2019

Eur J Cancer Care

View full text Add to dashboard Cite

The sleep quality of patients with osteosarcoma (OS) was poorly understood. We aimed to evaluate the prevalence of sleep dysfunction in adolescent patients with OS using the Pittsburgh Sleep Quality Index (PSQI) and to further investigate the psychometric properties of the PSQI in this cohort of patients. Fifty four adolescent patients with OS who underwent chemotherapy treatment in our clinic centre were included. Sleep quality was assessed with the Chinese PSQI. Cronbach's alpha was calculated to evaluate the internal consistency. The confirmatory factor analysis (CFA) was used to determine the fitness of a two‐factor structure. Sleep disturbance was observed in 57.4% (31/54) of the patients. Patients with the presence of metastasis or more than 2 cycles of chemotherapy were found to have remarkably higher median global score. The overall Cronbach's alpha was 0.87. The CFA showed an overall comparative fit index of 0.97, a root mean square error of approximation of 0.06 and a standardised root mean square residual of 0.07 respectively. PSQI was a reliable instrument to evaluate the sleep quality of adolescent patients with OS. Over half of the patients may experience sleep disturbance during the treatment. Early psychological interventions were recommended to improve the sleep quality of the patients.

show abstract

Factor structure of the Chinese version of the Pittsburgh Sleep Quality Index in breast cancer patients

Abstract: The results support the PSQI's original unidimensional structure, demonstrating that the PSQI global score is a valid and parsimonious measure for assessing and screening sleep dysfunction in cancer patients.

Cited by 85 publications

References 25 publications

Validation of the Sinhala version of the Pittsburgh Sleep Quality Index

Validation of the Sinhala version of the Pittsburgh Sleep Quality Index

Confirmatory factor analysis of the Pittsburgh Sleep Quality Index in women with hot flashes

Evaluation of sleep quality in adolescent patients with osteosarcoma using Pittsburgh Sleep Quality Index

Contact Info

Product

Resources

About