Psychometric evaluation of the Pittsburgh sleep quality index in cancer patients

Beck, Susan L.; Schwartz, Anna L.; Towsley, Gail L.; Dudley, William N.; Barsevick, Andrea

doi:10.1016/j.jpainsymman.2003.12.002

Cited by 380 publications

(333 citation statements)

References 19 publications

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“…36,37 Our review of the published literature revealed a wide range of reported Cronbach α for the PSQI, with a low of 0.43 (among Japanese healthy participants) to a high of 0.85 (among German patients with insomnia). [8][9][10][11]13,[15][16][17]38 Although the statistic is not interpretable in our study (given the observed three-factor structure), we reported an overall Cronbach's α (0.57) so as to be consistent with the other studies. Several previous studies conducted among pregnant Australian and British women, 1,7 Norwegian postpartum women, 39 Australian adults, 40 and cancer patients in Greece 8 found that the removal of "sleep medication use" component improved the Cronbach's α for the PSQI.…”

Section: Discussionsupporting

confidence: 80%

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Psychometric Properties of the Pittsburgh Sleep Quality Index (PSQI) in a Cohort of Peruvian Pregnant Women

Zhong

Gelaye

Sánchez

et al. 2015

Journal of Clinical Sleep Medicine

101

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Study Objectives: We sought to evaluate the construct validity and factor structure of the Spanish-language version of the Pittsburgh Sleep Quality Index (PSQI) among pregnant Peruvian women. Methods: A cohort of 642 women were interviewed at ≤ 16 weeks of gestation. During interview, we ascertained information about lifestyles, demographics, sleep characteristics, and mood symptoms. Stress induced sleep disturbance, depressive symptoms, and anxiety symptoms were evaluated using the Ford Insomnia Response to Stress Test (FIRST), Patient Health Questionnaire-9 (PHQ-9), and Generalized Anxiety Disorder-7 (GAD-7) assessment scales, respectively. Consistency indices, exploratory and confi rmatory factor analyses, correlations, and logistic regressions were used. Results: Both exploratory and confi rmatory factor analyses indicated a three-factor solution: sleep quality, sleep effi ciency, and sleep medication. We observed signifi cantly positive correlations of the PSQI with the FIRST (0.42), the PHQ-9 (0.49), and the GAD-7 (0.46). Poor sleepers (PSQI global score > 5) had signifi cantly increased odds of experiencing stress-induced sleep disturbance (odds ratio, OR = 3.57; 95% CI: 2.40, 5.31), depression (OR = 5.48; 95% CI: 3.58, 8.37), and generalized anxiety disorder (OR = 4.57; 95% CI: 3.08, 6.76). Conclusions:The Spanish-language version of the PSQI instrument was found to have good construct validity among pregnant Peruvian women. Consistent with some other studies, the PSQI was found to have a three-factor structure. Further assessment and validation studies are needed to determine whether the three, factor-specifi c scoring of the PSQI is favored over the PSQI global score in diverse populations. A mong pregnant women, pregnancy-associated physiological and hormonal changes are known to contribute to increased prevalence and severity of sleep complaints and disorders.1,2 Sleep complaints and disorders experienced in early pregnancy have been linked to hyperemesis, cesarean delivery, preterm birth, gestational diabetes mellitus, fetal growth restriction, and preeclampsia.2-5 Of note, an emerging literature has suggested that sleep disorders and poor sleep quality predict an increased risk of mood disorders including depressive symptomatology in late pregnancy.6,7 However, despite these observations and their clinical implications, relatively little has been done to design and implement clinical protocols that may be used to reliably and validly assess sleep effi ciency and night and daytime disturbance among pregnant women.One widely used self-reported measure of sleep quality, the Pittsburgh Sleep Quality Index (PSQI), has been established as a valid scale with acceptable psychometric properties when used among men and non-pregnant women in diverse global settings. [8][9][10][11][12][13][14][15][16][17][18] Though increasingly being used among pregnant women, 1,7,19 the psychometric properties of the PSQI has not been adequately assessed in this population. We are aware of only two published studies have eva...

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Section: Discussionsupporting

confidence: 80%

“…[8][9][10][11][12][13][14][15][16][17][18] Though increasingly being used among pregnant women, 1,7,19 the psychometric properties of the PSQI has not been adequately assessed in this population. We are aware of only two published studies have evaluated the psychometric properties of the PSQI among pregnant women.…”

mentioning

confidence: 99%

Psychometric Properties of the Pittsburgh Sleep Quality Index (PSQI) in a Cohort of Peruvian Pregnant Women

Zhong

Gelaye

Sánchez

et al. 2015

Journal of Clinical Sleep Medicine

101

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“…The PSQI has good internal consistency (Cronbach's alpha=0.83) [6]. It has been validated in different populations such as patients with depression, in the bereaved, elderly, and patients with anxiety disorders, chronic pain and cancers [7][8][9].…”

Section: Excessive Daytime Sleepiness Resulting From Poor Sleep Ismentioning

confidence: 99%

Validation of the Sinhala version of the Pittsburgh Sleep Quality Index

et al. 2016

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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.

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“…Em dois estudos que abordam avaliação do sono em pacientes com câncer em quimioterapia, um com pacientes com câncer de pulmão 11 e outro com variados tipos 12 , obtiveram valores que indicam sono de má qualidade, sendo 6,8 naquele e 8,1 neste.…”

Section: Discussionunclassified