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September 1, 2022Neurology AsiaOpen Access

Short sleep duration (<7 hours/day) was associated with an increased CVD specific mortality (HR = 1.12, 95% CI 1.08 to 1.16, p = 0.002), and long sleep duration (>7 hours/day) was associated with an increased CVD specific mortality (HR = 1.23, 95% CI 1.18 to 1.29, p < 0.001).

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Why the study?

Existing study results regarding the association between sleep duration and CVD mortality were inconsistent.

Does short or long sleep duration increase cardiovascular disease specific mortality?

Comparison

Short (<7 hours/day) and long (>7 hours/day) sleep duration vs normal sleep duration

Design

Systematic review and meta-analysis

Authors

FYFeicheng YeJLJing LiuSZShuguang Zhang

Discussion

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Overview

Sleep duration assessment may refine CVD mortality risk stratification; leaves open whether sleep modification alters outcomes.

Structured PICO

Does short or long sleep duration increase cardiovascular disease specific mortality?

P
Population
2,320,516 participants from 27 studies
I
Intervention
Short sleep duration (<7 hours/day) and long sleep duration (>7 hours/day)
C
Comparator
Normal sleep duration
O
Outcome
Cardiovascular disease specific mortalityhard clinical

Both short (<7 hours/day) and long (>7 hours/day) sleep durations are significantly associated with a higher risk of cardiovascular disease mortality compared to normal sleep duration.

Limitations

  • Did not take sleep quality into consideration
  • Did not include sleep regularity
  • Sleep disorders such as snoring and sleep apnea were not assessed due to the absence of individual patient data

Cite This Study

Ye et al. (2022) studied this question.

synapsesocial.com/papers/6a1037832badbc352aff8d50https://doi.org/10.54029/2022yry
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