Purpose
The Pittsburgh Sleep Quality Index (PSQI) is a self-reported questionnaire that measures sleep quality during the previous month. The aims of this study were to analyze the reliability and validity of the Korean version of the PSQI (PSQI-K) and to evaluate its usefulness.

The reliability and validity of the Korean version of the Pittsburgh Sleep Quality Index

In this guideline on the diagnosis of obstructive sleep apnea in adults, the American College of Physicians recommends a sleep study for patients with unexplained daytime sleepiness, polysomnograph...

http://rossleep.ru/wp-content/uploads/2014/08/Rekomendatsii-ACH.pdf

Management of Obstructive Sleep Apnea in Adults: A Clinical Practice Guideline From the American College of Physicians

The aim of this study is to validate the Italian version of the Pittsburgh Sleep Quality Index (PSQI), comparing five different groups of individuals (healthy young and elderly, sleep apnoea syndrome patients, depressed patients, individuals with dementia) by both questionnaire scores and polysomnographic measures. Fifty individuals (10 for each group) participated in the study. Each of them filled in the PSQI and slept for two consecutive nights in the sleep laboratory. The PSQI showed an overall reliability coefficient (Cronbach’s α) of 0.835, indicating a high degree of internal consistency. The mean PSQI global score showed significant differences between groups, with an impaired overall quality of sleep in patients’ groups with respect to both the healthy groups. Results also indicated that the best cut-off score (differentiating “good” from “bad” sleepers) is 5. Pittsburgh Sleep Quality Index is a useful, valid and reliable tool for the assessment of sleep quality, with an overall efficiency comparable to the mother language version and differentiate “good” from “bad” sleepers. The Italian version of the questionnaire provides a good and reliable differentiation between normal and pathological groups, with higher scores reported by people characterized by impaired objectively evaluated sleep quality.

Validity of the Italian Version of the Pittsburgh Sleep Quality Index (PSQI)

Sleep quality in the general population: psychometric properties of the Pittsburgh Sleep Quality Index, derived from a German community sample of 9284 people

The aim of this study is to assess the mutual relationships between burnout and sleep disorders in students in the preclinical phase of medical school. This study collected data on 127 medical students who filled in the Maslach Burnout Inventory-Student Survey, Pittsburgh Sleep Quality Index, Epworth Sleepiness Scale, Beck Depression Inventory, and Beck Anxiety Inventory. Hierarchical logistic regressions tested the reciprocal influence between sleep disorders and burnout, controlling for depression and anxiety. Regular occurrence of emotional exhaustion, poor sleep quality, and excessive daytime sleepiness affected 60, 65, and 63 % of medical students, respectively. Emotional exhaustion and daytime sleepiness influenced each other. Daytime sleep dysfunctions affected unidirectionally the occurrence of cynicism and academic efficacy. The odds of emotional exhaustion (odds ratio (OR) = 1.21, 95 % confidence interval (CI) = 1.08 to 1.35) and cynicism (OR = 2.47, 95 % CI = 1.25 to 4.90) increased when daytime sleepiness increased. Reciprocally, the odds of excessive daytime sleepiness (OR = 2.13, 95 % CI = 1.22 to 3.73) increased when emotional exhaustion worsened. Finally, the odds of academic efficacy decreased (OR = 0.86, 95 % CI = 0.75 to 0.98) when daytime sleepiness increased. Burnout and sleep disorders have relevant bidirectional effects in medical students in the early phase of medical school. Emotional exhaustion and daytime sleepiness showed an important mutual influence. Daytime sleepiness linked unidirectionally with cynicism and academic efficacy.

Eduardo Giacomolli Dartora

Papers

Validation of the Brazilian Portuguese version of the Pittsburgh Sleep Quality Index.