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Objective. Sleep problems are nonmotor symptoms in Parkinson’s disease that should be carefully evaluated for better management and treatment. Parkinson’s Disease Sleep Scale (PDSS-2) is one of the most reliable tools for measuring sleep difficulties in people with Parkinson’s disease. This study investigated the psychometric properties of the Persian version of PDSS-2. Methods. Four hundred and fifty-six people with Parkinson’s disease with a mean age ±standard deviation of 60.7 ± 11.3 years were engaged in this study. Acceptability was assessed by floor and ceiling effects. Dimensionality was measured by exploratory factor analysis. The convergent validity of PDSS-2 with the Hospital Anxiety and Depression Scale (HADS) was assessed. Internal consistency and test-retest reliability were assessed with Cronbach’s alpha and intraclass correlation coefficient (ICC), respectively. Results. No noticeable ceiling and floor effect was detected. The dimensionality analysis showed three factors. A high correlation was obtained between PDSS-2 and HADS (anxiety subscale). Excellent internal consistency with α = 0.94, and good test-retest reliability with ICC = 0.89 were obtained. Conclusion. This study showed that the Persian version of Parkinson’s Disease Sleep Scale has acceptable validity and reliability for measuring sleep disturbances in people with Parkinson’s disease.

Background: COVID-19 is accompanied by various symptoms such as fever, dry cough, and fatigue in 80% of cases. Many people with COVID-19 suffer from different symptoms after recovery, similar to the initial symptoms of this disease, such as weakness, fatigue, anxiety, and depression. Prolonged recovery time and the consequences of hospitalization and COVID-19 in these patients can affect their occupational balance. Objectives: The present study compared occupational balance, fatigue, depression, and anxiety among hospital-discharged COVID-19 survivors with healthy individuals. Methods: This cross-sectional study was conducted from March to August 2022 in Imam Reza Hospital. The statistical population consisted of hospital-discharged COVID-19 survivors and healthy individuals included in the study (70 individuals per group). Evaluations were performed in one session using the Occupational Balance Questionnaire (OB-Quest), Hospital Anxiety and Depression Scale (HADS), and Fatigue Severity Scale (FSS). Results: The mean scores of depression (8.46 ± 3.78 vs. 4.29 ± 2.91), anxiety (9.34 ± 4.38 vs. 4.46 ± 3.09), and fatigue (44.29 ± 10.02 vs. 28.49 ± 9.87) were higher in hospital-discharged COVID-19 survivors than the healthy individuals. Furthermore, the rate of depression was directly related to anxiety (r = 0.773) and occupational balance disruption (moderate and severe levels) (r = 6.77). Conclusions: According the results demonstrated that hospital-discharged COVID-19 survivors had more disrupted occupational balance than the healthy individuals and experienced higher levels of anxiety, depression, and fatigue after discharge. Given the poorer occupational balance of hospital-discharged COVID-19 survivors than the healthy individuals, they need proper training after discharge to maintain a balance between different aspects of their lives and occupations. Therapists can also design and implement new interventions to improve the occupational balance of COVID-19 survivors.

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