Background: The importance of sleep on cardiovascular health has been increasingly acknowledged. However, the effect of combined sleep behaviors on life expectancy remains understudied.

Aim: To investigate the association between sleep patterns with total and cause-specific mortality and life expectancy, using a nationally representative sample of US adults.

Design: Population-based cohort study.

Methods: This cohort study included 172 321 adults aged 18 years or older in the National Health Interview Survey (2013-18) with linkage to the National Death Index records up to 31 December 2019. The life expectancy at the age of 30 years by the number of low-risk sleep scores was estimated using a flexible parametric survival model.

Results: During a median follow-up of 4.3 years, of the 172 321 adults (50.9% women; mean [SE] age, 46.98 [0.10] years), 8681 individuals died. The adjusted hazard ratios (95% confidence intervals [CI]) of participants with five vs. 0-1 low-risk sleep factors for all-cause, cardiovascular, and cancer mortality were 0.70 (0.63-0.77), 0.79 (0.67-0.93) and 0.81 (0.66-0.98), respectively. Nearly 8% (population attributable fraction 7.9%, 95% CI: 5.5-10.4) of mortality in this cohort could be attributed to suboptimal sleep patterns. When compared to those with 0-1 low-risk sleep factors, life expectancy at the age of 30 years for individuals with all five low-risk sleep factors was 4.7 (95% CI: 2.7-6.7) years greater for men and 2.4 (95% CI: 0.4-4.4) years greater for women.

Conclusions: Our findings suggest that greater adherence to a low-risk sleep pattern may lead to significant gains in life expectancy among US adults.

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http://dx.doi.org/10.1093/qjmed/hcad237DOI Listing

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