Evidence map›Paper›PMID 32967506›Full record

ArticleThe Journal of international medical research2020

Slow-wave sleep is associated with incident hypertension in patients with obstructive sleep apnea: a cross-sectional study.

Jing Zhang, Yan Zhuang, Nan-Sheng Wan, Xin Tang, Wei Zhou, Liang Si, Yan Wang, Bao-Yuan Chen, Jie Cao

Open access · goldAbstract read
In one paragraph

Article in The Journal of international medical research, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.

0numbers the graph read from it
0cells of the map it votes in
4citing papers in PubMed
0.6field-weighted citation impact, top 32% 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

4 citing papers in PubMed, 6 citations in OpenAlex.

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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

9 authors at 1 institution in 1 country.

Jing ZhangDepartment of Respiratory Medicine, Tianjin Medical University General Hospital, Tianjin, China.
Yan ZhuangDepartment of Respiratory Medicine, Tianjin Medical University General Hospital, Tianjin, China.
Nan-Sheng WanDepartment of Respiratory Medicine, Tianjin Medical University General Hospital, Tianjin, China.
Xin TangDepartment of Respiratory Medicine, Tianjin Medical University General Hospital, Tianjin, China.
Wei ZhouDepartment of Respiratory Medicine, Tianjin Medical University General Hospital, Tianjin, China.
Liang SiDepartment of Respiratory Medicine, Tianjin Medical University General Hospital, Tianjin, China.
Yan WangDepartment of Respiratory Medicine, Tianjin Medical University General Hospital, Tianjin, China.
Bao-Yuan ChenDepartment of Respiratory Medicine, Tianjin Medical University General Hospital, Tianjin, China.
Jie CaoDepartment of Respiratory Medicine, Tianjin Medical University General Hospital, Tianjin, China.ORCID https://orcid.org/0000-0001-6058-4608
Tianjin Medical University General Hospital · CN

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

objectiveThis study aimed to examine the association between slow-wave sleep ([SWS] N3 stage) and the risk of hypertension in patients with obstructive sleep apnea (OSA) or primary snorers.

methodsA retrospective cross-sectional study of 1145 participants who were evaluated for suspected OSA at our Sleep Medical Center were included. Among these participants, 1022 had OSA and 123 were primary snorers. Logistic regression modeling was performed to evaluate the association between the prevalence of hypertension and combined OSA and SWS based on polysomnographic measurements.

resultsPatients with OSA in the lowest SWS quartile (quartile 1,  < 2.0%) showed a two-fold increased risk of hypertension after adjustment for confounding factors compared with primary snorers (odds ratio, 2.13 [95% confidence interval 1.54-2.06]). In logistic analysis stratified according to SWS quartiles, there was no significant difference in the risk of hypertension between patients with OSA and primary snorers in quartile 1. However, in the highest quartile (quartile 4), SWS was significantly associated with incident hypertension in patients with OSA rather than primary snorers.

conclusionSWS is associated with prevalent hypertension in patients with OSA. Notably, a low proportion of SWS confers a stronger association with incident hypertension than OSA.

Indexed as

HypertensionSleep Apnea, ObstructiveSleep, Slow-WaveCross-Sectional StudiesHumansPolysomnographyRetrospective StudiesRisk FactorsSleepblood pressureHypertensionobstructive sleep apneapolysomnographyslow-wave sleepsnorer

Identifiers

PMID32967506
PMCPMC7520930
OpenAlexW3088318404

What OpenQuestion holds

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Registered trials

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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.