Evidence map›Paper›PMID 35760551›Full record

ArticleBMJ open2022

Association between sleep duration and hypertension in southwest China: a population-based cross-sectional study.

Xiaoyu Chang, Xiaofang Chen, John S Ji, Guojin Luo, Xiaofang Chen, Qiang Sun, Ningmei Zhang, Yu Guo, Pei Pei, Liming Li and 2 more

Open access · goldAbstract read
In one paragraph

Article in BMJ open, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 9 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
9citing papers in PubMed, 1 pooled it
2.5field-weighted citation impact, top 11% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

9 citing papers in PubMed, 1 synthesis or guideline pooled it, 13 citations in OpenAlex.

  1. Pooled it
  2. Sleep quality and hypertension: a counterfactual mediation analysis of the role of depressive symptoms.Hypertension research : official journal of the Japanese Society of Hypertension · 2026
    Article
  3. Review
  4. Observational
  5. Article
  6. Review
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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

12 authors at 6 institutions in 2 countries.

Xiaoyu ChangDepartment of Chronic and Non-communicable Disease Control and Prevention, Sichuan Center for Disease Control and Prevention, Chengdu, Sichuan, China.ORCID 0000-0001-8361-3977
Xiaofang ChenDepartment of Epidemiology and Statistics, Chengdu Medical College, Chengdu, Sichuan, China.
John S JiVanke School of Public Health, Tsinghua University, Beijing, China.ORCID 0000-0002-5002-118X
Guojin LuoPengzhou Center for Disease Control and Prevention, Pengzhou, Sichuan, China.
Xiaofang ChenPengzhou Center for Disease Control and Prevention, Pengzhou, Sichuan, China.
Qiang SunPengzhou Center for Disease Control and Prevention, Pengzhou, Sichuan, China.
Ningmei ZhangDepartment of Chronic and Non-communicable Disease Control and Prevention, Sichuan Center for Disease Control and Prevention, Chengdu, Sichuan, China.
Yu GuoChinese Academy of Medical Sciences, Beijing, China.
Pei PeiChinese Academy of Medical Sciences, Beijing, China.
Liming LiDepartment of Epidemiology and Biostatistics, School of Public Health, Peking University, Beijing, China.
Zhengming ChenClinical Trial Service Unit (CTSU) and Epidemiological Studies Unit, Nuffield Department of Population Health, University of Oxford, Oxford, UK.
Xianping WuSichuan Center for Disease Control and Prevention, Chengdu, Sichuan, China wwwuxp@163.com.
Sichuan Center for Disease Control and Prevention · CNChinese Academy of Medical Sciences & Peking Union Medical College · CNChengdu Medical College · CNPeking University · CNUniversity of Oxford · GBVanke (China) · CN

Funding

Cancer Research UK 29186Medical Research Council MC_U137686851Medical Research Council MC_UU_00017/1Medical Research Council MC_UU_12026/2Wellcome Trust
6 · The paper itself

Abstract

objectiveHypertension is a major risk factor and cause of many non-communicable diseases in China. While there have been studies on various diet and lifestyle risk factors, we do not know whether sleep duration has an association to blood pressure in southwest China. This predictor is useful in low-resource rural settings. We examined the association between sleep duration and hypertension in southwest China.

designPopulation-based cross-sectional study.

settingThis study was part of the baseline survey of a large ongoing prospective cohort study, the China Kadoorie Biobank. Participants were enrolled in 15 townships of Pengzhou city in Sichuan province during 2004-2008.

participants55 687 participants aged 30-79 years were included. Sleep duration was assessed by a self-reported questionnaire.

main outcome measuresHypertension was defined as systolic blood pressure ≥140 mm Hg and/or diastolic blood pressure ≥90 mm Hg, or prior physician-diagnosed hypertension in hospitals at the township (community) level or above.

resultsThe prevalence of hypertension was 25.17%. The percentages of subjects with sleep durations of <6, 6, 7, 8 and ≥9 hours were 17.20%, 16.14%, 20.04%, 31.95% and 14.67%, respectively. In multivariable-adjusted analyses, the increased ORs of having hypertension were across those who reported ≥9 hours of sleep (men: 1.16, 95% CI 1.04 to 1.30; women: 1.19, 95% CI 1.08 to 1.32; general population: 1.17, 95% CI 1.08 to 1.26). The odds of hypertension was relatively flat until around 6.81 hours of sleep duration and then started to increase rapidly afterwards in subjects and a J-shaped pattern was observed. There was a U-shaped relationship between sleep duration and hypertension in females.

conclusionLong sleep duration was significantly associated with hypertension and a J-shaped pattern was observed among rural adults in southwest China, independent of potential confounders. However, this association was not obvious between short sleep duration and hypertension.

Indexed as

HypertensionAdultChinaCross-Sectional StudiesFemaleHumansMaleProspective StudiesRisk FactorsSleepepidemiologyhypertensionpublic healthsleep medicine

Identifiers

PMID35760551
PMCPMC9237882
OpenAlexW4283577290

What OpenQuestion holds

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LicenceCC BY
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Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.