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The association between sleep duration, napping, and stroke stratified by self-health status among Chinese people over 65 years old from the China health and retirement longitudinal study

  • Sleep Breathing Physiology and Disorders • Original Article
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Abstract

Purpose

Stroke is a major cause of death in China. This study aimed to investigate the association between sleep duration (nighttime sleep and daytime napping) and stroke in elderly Chinese individuals with self-reported health status.

Methods

A total of 4785 Chinese adults over 65 years from the 2011 China Health and Retirement Longitudinal Study (CHARLS) were included. Binary logistic regression was used to estimate odds ratios and 95% confidence intervals of the association between sleep duration and stroke stratified by self-reported health status.

Results

A significant association between short sleep duration (< 7 h per day) and the risk of stroke (aOR = 2.05; 95% CI 1.31–3.19), after controlling for sociodemographic characteristics, lifestyle factors, health status, and comorbidities. There was no significant association between short and long sleep duration and stroke in the individuals who reported good general health status. However, in individuals who reported poor health status, short sleep duration (aOR = 2.11; 95% CI 1.30–3.44) and long sleep duration (aOR = 1.86; 95% CI 1.08–3.21) were significantly associated with increased risk of stroke, compared with normal sleep duration (7–8 h per day). Disability was significantly associated with stroke in both self-reported good and poor health groups. Rural residence was significantly associated with a lower risk of stroke among individuals who reported poor health status.

Conclusions

Both short and long sleep duration were significantly associated with stroke among individuals who reported poor health. Stroke prevention should be focused on elderly individuals who believe that they have health problems.

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Authors and Affiliations

  1. Robert Stempel College of Public Health and Social Work, Florida International University, 11200 SW 8th st, Miami, FL, 33199, USA

    Wei Li, Anthony Kondracki, Prem Gautam, Abir Rahman, Sandra Kiplagat & Wenjie Sun

  2. Department of Geriatrics, The Second People’s Hospital of Lianyungang, No. 41 Hailiandong Road, Lianyungang, 222006, Jiangsu, China

    Houqin Liu

Authors
  1. Wei Li
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  7. Wenjie Sun
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Corresponding authors

Correspondence to Houqin Liu or Wenjie Sun.

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Ethical approval for collecting data on human subjects was received at Peking University by their institutional review board (IRB). All participants gave their explicit written informed consent before recruitment into the study.

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The authors declare that they have no competing interests.

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Appendix

Appendix

Table 1 Basic characteristics related to outcome stroke for the overall sample (n = 4785)
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Table 2 Binary logistic regression assessing the association between sleep duration with nap and stroke (n = 4785)
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Li, W., Kondracki, A., Gautam, P. et al. The association between sleep duration, napping, and stroke stratified by self-health status among Chinese people over 65 years old from the China health and retirement longitudinal study. Sleep Breath 25, 1239–1246 (2021). https://doi.org/10.1007/s11325-020-02214-x

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  • DOI: https://doi.org/10.1007/s11325-020-02214-x

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