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Epidemiology
Research
Relation of sleep quality and sleep duration to type 2 diabetes: a population-based cross-sectional survey
  1. Peian Lou1,
  2. Peipei Chen1,
  3. Lei Zhang1,
  4. Pan Zhang1,
  5. Jiaxi Yu1,
  6. Ning Zhang1,
  7. Hongmin Wu2,
  8. Jing Zhao2
  1. 1Department of Control and Prevention of Chronic Non-Communicable Diseases, Xuzhou Center for Disease Control and Prevention, Xuzhou, China
  2. 2Department of Epidemiology and Statistics, Xuzhou Medical College, Xuzhou, China
  1. Correspondence to Dr Peian Lou; loupeian2004{at}yahoo.com.cn

Abstract

Objectives To investigate the association between self-reported sleep duration, sleep quality and the prevalence of diabetes in a contemporary sample of Chinese adults.

Design Cross-sectional survey.

Setting Community-based investigation in Xuzhou, China.

Participants 16 893 Chinese men and women aged 18–75 who fulfilled the inclusion and exclusion criteria were enrolled.

Primary and secondary outcome measures Self-reported quality and duration of sleep were obtained by questionnaire, and type 2 diabetes was assessed by fasting blood glucose. Sleep quality was categorised as good, common or poor. Sleep duration was measured by average hours of sleep per night, with categories of ≤6 h, 6–8 h and ≥8 h. A logistic regression model was used to evaluate the association between sleep duration or sleep quality and diabetes.

Results Both poor quality of sleep and short sleep duration (≤6 h) were associated with increased prevalence of diabetes, with higher rates in relatively healthy Chinese people. Compared with the group with good quality of sleep and 6–8 h sleep duration, diabetes was the most prevalent in individuals with poor sleep quality and ≤6 h sleep duration (OR 1.41, 95% CI 1.07 to 1.85) and in those with poor sleep quality who slept ≥8 h (OR 1.39, 95% CI 0.85 to 2.26), even after adjustment for a large number of further possible factors.

Conclusions The results suggest that sleep of poor quality and short duration is associated with diabetes.

This is an open-access article distributed under the terms of the Creative Commons Attribution Non-commercial License, which permits use, distribution, and reproduction in any medium, provided the original work is properly cited, the use is non commercial and is otherwise in compliance with the license. See: http://creativecommons.org/licenses/by-nc/2.0/ and http://creativecommons.org/licenses/by-nc/2.0/legalcode.

https://doi.org/10.1136/bmjopen-2012-000956

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    Footnotes

    • To cite: Lou P, Chen P, Zhang L, et al. Relation of sleep quality and sleep duration to type 2 diabetes: a population-based cross-sectional survey. BMJ Open 2012;2:e000956. doi:10.1136/bmjopen-2012-000956

    • Contributors Steering Committee: PL (principal investigator), Yanan Zhu (principal investigator), PC and LZ. Operating Committee: PZ, JY, NZ, Na Chen, HW and JZ.

    • Funding This research was funded by the Preventive Medicine research projects of Jiangsu Province Health Department from 2007 to 2008 (Y200703). The Science and Technology projects of Xuzhou City in 2008 (XM08C041). The researchers were independent from funders. The study funders had no influence on the study design, data collection, analysis, interpretation of data, writing of the report, and the decision to submit the article for publication.

    • Competing interests None.

    • Patient consent Obtained.

    • Ethics approval The study protocol was approved by Xuzhou Center for Disease Control and Prevention.

    • Provenance and peer review Not commissioned; externally peer reviewed.

    • Data sharing statement There are no additional data available.