Impact of Sleep Duration on Decline in Kidney Function in Adult Patients with Hypertension: A Community-Based Prospective Cohort Study
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Background: Sleep duration is associated with various health conditions, including chronic kidney disease. How-ever, the association between sleep duration and decline in kidney function in the South Korean population re-mains unclear. We aimed to investigate the impact of sleep duration on kidney function decline in adult patients with hypertension.Methods: This cohort study was performed using data obtained from the Korean Genome and Epidemiology Study; 2,837 patients with hypertension who initially had normal kidney function were included. Glomerular filtra-tion rates (GFRs) were estimated at baseline and throughout the 16 years of follow-up. A person was considered to have a decline in kidney function if they had a GFR <60 mL/min/1.73 m2. Sleep duration data were obtained through interviewer-assisted questionnaires. Sleep durations were classified as short (<6 hours), normal (≥6 hours but <9 hours), and long (≥9 hours). The Cox proportional hazards model was applied, with adjustments for covari-ates.Results: After adjusting for covariates, sleep duration was not associated with a decline in kidney function. Howev-er, among men with poorly controlled hypertension at baseline, compared to men with normal sleep durations, men with sleep durations <6 hours had a significantly higher risk of kidney function decline (hazard ratio, 1.56; 95% confidence interval, 1.02–2.36).Conclusion: Short sleep duration did not seem to be associated with an increased risk of decline in kidney func-tion; however, it may be a risk factor for the decline in kidney function in men with poorly controlled hypertension.
Abstract
Background: Sleep duration is associated with various health conditions, including chronic kidney disease. How-ever, the association between sleep duration and decline in kidney function in the South Korean population re-mains unclear. We aimed to investigate the impact of sleep duration on kidney function decline in adult patients with hypertension.Methods: This cohort study was performed using data obtained from the Korean Genome and Epidemiology Study; 2,837 patients with hypertension who initially had normal kidney function were included. Glomerular filtra-tion rates (GFRs) were estimated at baseline and throughout the 16 years of follow-up. A person was considered to have a decline in kidney function if they had a GFR <60 mL/min/1.73 m2. Sleep duration data were obtained through interviewer-assisted questionnaires. Sleep durations were classified as short (<6 hours), normal (≥6 hours but <9 hours), and long (≥9 hours). The Cox proportional hazards model was applied, with adjustments for covari-ates.Results: After adjusting for covariates, sleep duration was not associated with a decline in kidney function. Howev-er, among men with poorly controlled hypertension at baseline, compared to men with normal sleep durations, men with sleep durations <6 hours had a significantly higher risk of kidney function decline (hazard ratio, 1.56; 95% confidence interval, 1.02–2.36).Conclusion: Short sleep duration did not seem to be associated with an increased risk of decline in kidney func-tion; however, it may be a risk factor for the decline in kidney function in men with poorly controlled hypertension.
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