Findings from a new study suggest that both short and long sleep duration are independently associated with low health-related quality of life (HR-QoL) in adults with predialysis chronic kidney disease (CKD).
The study included data from 1,910 adults with predialysis CKD enrolled in the Korean Cohort Study for Outcome in Patients with CKD. HR-QoL was assessed with the physical component summary and mental component summary of the Short Form-36 Health Survey.
The authors found those who slept for seven hours showed the highest HR-QoL. They identified an inverted U-shaped relationship between sleep duration and health-related quality of life, with participants who slept around five hours per day and nine hours per day having poorer HR-QoL.
"Our findings suggest that short or long sleep duration is independently associated with low HR-QoL in adults with CKD. Sleep duration is an important predictor of HR-QoL in CKD," said Dr. Kyu-Beck Lee. The authors said additional studies are needed to determine whether promoting optimal sleep among patients can improve health outcomes.
The findings are published in the Clinical Journal of the American Society of Nephrology (CJASN).