The Pittsburgh sleep quality index as a screening tool for sleep dysfunction in clinical and non-clinical samples: A systematic review and meta-analysis

Mollayeva, Tatyana; Thurairajah, Pravheen; Burton, Kirsteen R.; Mollayeva, Shirin; Shapiro, Colin M.; Colantonio, Angela

doi:10.1016/j.smrv.2015.01.009

Cited by 1,188 publications

(977 citation statements)

References 82 publications

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“…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

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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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Section: Discussionmentioning

confidence: 99%

Validation of the Sinhala version of the Pittsburgh Sleep Quality Index

et al. 2016

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“…Internal consistency of the PSQI is high α = 0.83 (Buysse et al, 1989). The questionnaire has been psychometrically evaluated in non-clinical groups (Mollayeva et al, 2016).…”

Section: Methodsmentioning

confidence: 99%

Sleep quality and paranoia: The role of alexithymia, negative emotions and perceptual anomalies

Rehman

Gumley

Biello

2018

Psychiatry Research

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A B S T R A C TRecent evidence suggests that sleep problems are associated with psychotic like experiences including paranoia. However, the mechanisms underpinning this association are not well understood and thus studies modelling hypothesised mediating factors are required. Alexithymia, the inability to recognise and describe emotions within the self may be an important candidate. In two separate studies we sought to investigate factors mediating the relationship between sleep quality and paranoia using a cross-sectional design. Healthy volunteers without a mental health diagnosis were recruited (study 1, N = 401, study 2, N = 402). Participants completed a series of measures assessing paranoia, negative emotions, alexithymia and perceptual anomalies in an online survey. In study 1, regression and mediation analyses showed that the relationship between sleep quality and paranoia was partially mediated by alexithymia, perceptual anomalies and negative affect. In contrast, study 2 found that the relationship between sleep quality and paranoia was fully mediated by negative affect, alexithymia and perceptual anomalies. The link between sleep quality and paranoia is unclear and reasons for discrepant results are discussed. Novel findings in this study include the link between alexithymia and paranoia.

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“…Scores higher is related to the quality of sleep are more unfavorable (Buysse, Reynolds, Monk, Berman, & Kupfer, 1989). Reliability and validity of this questionnaire have been confirmed in other studies (Alsaadi et al, 2013;Farhadi Nasab & Azimi, 2008;Mollayeva et al, 2015). According to the designers of the questionnaire, a score greater than 5 indicates a poor sleep quality (Ağargün, Kara, & Anlar, 1996;Aloba, Adewuya, Ola, & Mapayi, 2007;Doi et al, 2000).…”

Section: Sleep Quality Assessmentmentioning

confidence: 57%

Factors Affecting Sleep Quality in Firefighters

Abbasi¹,

Rajabi²,

Yazdi³

et al. 2018

Sleep Hypn

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Background: Identifying factors affecting the quality of sleep in firefighters is of significant importance. Good sleep is one of the essential needs of firefighters, and poor sleep quality impairs their performance and decision making. The present study aimed to evaluate sleep quality and its relation with ergonomic, demographic, and psychological factors in firefighters employed in Qazvin. Methods: 118 firefighters from seven stations participated in this study. Data were gathered by questionnaires including demographic, Pittsburgh Sleep Quality Index, Beck Depression Inventory, HSE questionnaire for occupational stress, and Nordic questionnaire. Data were compared between two groups of firefighters with good and poor sleep quality. Then the data were analyzed using regression analysis. Results: 59.3% of firefighters had poor quality of sleep. Univariate analysis showed a significant correlation between sleep quality with musculoskeletal disorders, shift work, body mass index (BMI), and stress (P<0.05). In multivariate analysis, all variables except the occupational stress maintained their significant relationship with sleep quality. Conclusion: this study showed that musculoskeletal disorders (MSDs), shift work, and high body mass index are associated with poor sleep quality in firefighters. Proper timely interventions are suggested to prevent the complications of sleep disorders in firefighters.

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The Pittsburgh sleep quality index as a screening tool for sleep dysfunction in clinical and non-clinical samples: A systematic review and meta-analysis

Cited by 1,188 publications

References 82 publications

Validation of the Sinhala version of the Pittsburgh Sleep Quality Index

Validation of the Sinhala version of the Pittsburgh Sleep Quality Index

Sleep quality and paranoia: The role of alexithymia, negative emotions and perceptual anomalies

Factors Affecting Sleep Quality in Firefighters

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