Key result
A night sleep duration of 9 hours was associated with a lower odds of hypertension (OR 0.70) compared to 7 hours of sleep in an Iranian adult population.
Why the study?
Findings on the adverse effects of sleep disorders on blood pressure remain controversial, and few studies have evaluated sleep duration and hypertension across all age and sex subgroups.
Does night sleep duration affect the prevalence of hypertension in adults aged 35-65 years?
Cross-Sectional (n=9,865)
Does night sleep duration affect the prevalence of hypertension in adults aged 35-65 years?
A night sleep duration of 9 hours is associated with a lower prevalence of hypertension compared to 7 hours, with a linear inverse association in men and a non-linear association in women.
Answers are grounded in this paper and cite their sources.
This observational association should not drive clinical sleep recommendations; leaves open whether extending sleep.
Background: Several studies have suggested that sleep disorders have adverse effects on blood pressure. However, the findings remain controversial and only a few studies have investigated the association between sleep duration and hypertension among all age and sex subgroups. Aim: To evaluate the dose-response association between sleep duration and blood pressure in the Iranian population using the Ravansar non-communicable disease cohort study. Methods: This was a cross-sectional study of 9865 participants aged 35-65 years from the 2014-2017 Ravansar non-communicable disease cohort study. Night sleep duration was classified as ≤5 hours, 6 hours, 7 hours, 8 hours, 9 hours, and ≥10 hours. The association between self-reported sleep duration and hypertension was examined using multivariable logistic regression in STATA version 14. Restricted cubic spline analysis showed the dose-response association between sleep duration and hypertension. Results: The age-adjusted prevalence of hypertension was 16.50% among men, 24.20% among women and 20.50% in the total population. Compared with reference sleep duration (7 hours) in the total population, the multivariable odds ratio [OR (95% CI)] for hypertension was 0.70 (0.55-0.88) for the group with 9 hours sleep duration and 0.90 (0.74-1.09) for the group with ≤5 hours sleep duration. Among pre-menopausal women, we observed an inverse association between 9 hours sleep duration and hypertension [0.62 (0.42-0.90)]. The age-adjusted cubic spline suggested a linear inverse association between sleep duration and prevalence of hypertension among men and the total population and a non-linear association among women. Conclusion: Longer sleep duration (from 9 hours) had a negative association with hypertension. Further studies are needed to identify the risk factors associated with sleep duration and hypertension among the general population in the Islamic Republic of Iran.
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Asgari et al. (2023) conducted a cross-sectional in Hypertension (n=9,865). Night sleep duration of 9 hours vs. Night sleep duration of 7 hours was evaluated on Hypertension (OR 0.70, 95% CI 0.55-0.88). A night sleep duration of 9 hours was associated with a lower odds of hypertension (OR 0.70) compared to 7 hours of sleep in an Iranian adult population.
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