BACKGROUND The Pittsburgh Sleep Quality Index (PSQI) and the Epworth Sleepiness Scale (ESS) are questionnaires used to assess sleep quality and excessive daytime sleepiness in clinical and population-based studies. The present study aimed to evaluate the construct validity and factor structure of the PSQI and ESS questionnaires among young adults in four countries (Chile, Ethiopia, Peru and Tha...

WHY: For all people, sleep is part of the rhythm of life. Without a " good " sleep, the body loses the ability to revitalize, the mind is less adept and one's mood is altered. Circadian rhythms have a major impact on older adults' health and well-being. Normal aging changes conspire to interfere with the quality of sleep, while health and medication use can affect the sleep patterns in a negati...

BACKGROUND/AIMS The aim of this study was to compare the sleep quality between rheumatoid arthritis (RA) patients and healthy controls; and to evaluate the relationship between RA disease activity and sleep quality in Korea. METHODS A total of 130 RA patients and 67 age- and sex-matched healthy controls were enrolled in a comparative study of sleep quality using the Pittsburgh Sleep Quality I...

BACKGROUND Sleep disturbances are common in Parkinson's disease (PD). Bilateral subthalamic nucleus (STN) deep brain stimulation (DBS) is superior to best medical therapy in the treatment of motor symptoms in advanced PD, and observational studies suggest that bilateral STN DBS improves sleep in these patients as well. Unilateral STN DBS also improves motor function in PD, but its effects on sl...

INTRODUCTION The Pittsburgh Sleep Quality Index (PSQI) is a questionnaire that assesses sleep quality and disturbances over a 1-month period. It is a valuable tool for research purposes. The aim of this study was to validate a Brazilian Portuguese version of the PSQI. METHODS The Brazilian Portuguese version (PSQI-BR) was developed according to the following steps: (a) translation, (b) back-t...

Objective: We aimed to study the association among leptin levels, sleep duration, PSQI and risks of type 2 diabetes in Chinese women nurses. Methods: We conducted a cross sectional study, 65 diabetics and age matched 72 non-diabetic group were assessed for physical and chemical parameters like Body Mass Index, PSQI, leptin levels, insulin levels and fasting blood glucose. Plasma leptin level wa...

PURPOSE/OBJECTIVES To examine the relationship of sleep disturbance and symptom severity, symptom interference, and hospitalization among inpatients with cancer. DESIGN A descriptive, correlational, comparative design. SETTING The oncology inpatient unit of a teaching hospital. SAMPLE A convenience sample of 82 hospitalized patients. METHODS Patients completed the Pittsburgh Sleep Quali...

The objective of this study was to investigate the reliability and validity of the Pittsburgh Sleep Quality Index (PSQI) in a non-clinical sample consisting of younger and older adults. There has been little research validating the PSQI with respect to multinight recording as with actigraphy, and more validation is needed in samples not specifically selected for clinical disturbance. Also, the ...

BACKGROUND Sleep disturbance is one of the common complaints in menopause. This study investigated the relationship between menopausal symptoms and sleep quality in middle-aged women. METHOD This cross-sectional observational study involved 634 women aged 44-56 years attending a healthcare center at Kangbuk Samsung Hospitals. Sleep quality was measured using the Pittsburgh Sleep Quality Index...

OBJECTIVES Excessively short and long sleep durations are associated with type 2 diabetes, but there is limited information about the association between sleep quality and diabetes. Accordingly, the present study was performed to investigate this relationship. MATERIALS AND METHODS The subjects were 3249 patients with type 2 diabetes aged 20 years or older. Sleep quality was assessed by using...