Evidence map›Paper›PMID 28686746›Full record

ArticlePloS one2017

Obstructive sleep apnea and objective short sleep duration are independently associated with the risk of serum vitamin D deficiency.

Ronaldo D Piovezan, Camila Hirotsu, Marcia C Feres, Fatima D Cintra, Monica L Andersen, Sergio Tufik, Dalva Poyares

Open access · goldAbstract read
In one paragraph

Article in PloS one, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 35 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
35citing papers in PubMed, 2 pooled it
4.8field-weighted citation impact, top 4% 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

35 citing papers in PubMed, 2 syntheses or guidelines pooled it, 59 citations in OpenAlex.

  1. Racial and Ethnic Disparities in the Diagnosis and Treatment of Obstructive Sleep Apnea: A Systematic Review.International journal of environmental research and public health · 2026
    Pooled it
  2. Pooled it
  3. Article
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  7. Article
  8. Article
  9. Serum Vitamin DNutrients · 2023
    Article
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  12. Review
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  14. Review
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  16. Article
  17. Sleep duration as an independent factor associated with vitamin D levels in the EPISONO cohort.Journal of clinical sleep medicine : JCSM : official publication of the American Academy of Sleep Medicine · 2021
    Article
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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

7 authors at 1 institution in 1 country.

Ronaldo D PiovezanDepartment of Psychobiology, Universidade Federal de Sao Paulo, São Paulo, São Paulo, Brazil.ORCID http://orcid.org/0000-0003-2537-8766
Camila HirotsuDepartment of Psychobiology, Universidade Federal de Sao Paulo, São Paulo, São Paulo, Brazil.
Marcia C FeresDepartment of Psychobiology, Universidade Federal de Sao Paulo, São Paulo, São Paulo, Brazil.
Fatima D CintraDepartment of Medicine, Universidade Federal de Sao Paulo, São Paulo, São Paulo, Brazil.
Monica L AndersenDepartment of Psychobiology, Universidade Federal de Sao Paulo, São Paulo, São Paulo, Brazil.
Sergio TufikDepartment of Psychobiology, Universidade Federal de Sao Paulo, São Paulo, São Paulo, Brazil.
Dalva PoyaresDepartment of Psychobiology, Universidade Federal de Sao Paulo, São Paulo, São Paulo, Brazil.
Universidade Federal de São Paulo · BR

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundStudies demonstrate an association between vitamin D (25(OH)D) deficiency and sleep disturbances, such as obstructive sleep apnea (OSA) and short sleep duration. However, to date, no studies have concurrently and objectively evaluated the effect of these factors on 25(OH)D.

objectivesTo evaluate whether OSA and objective short sleep duration are independently associated with reduced 25(OH)D in an adult population sample.

methodsA cross-sectional study included 657 individuals from the city of Sao Paulo, Brazil, as part of the ERA project. Participants fulfilled questionnaires and underwent clinical evaluation, polysomnography and blood sample collection for 25(OH)D quantification. OSA was classified into three categories (mild, moderate and severe). The risk of 25(OH)D deficiency was considered as levels<30 ng/mL. Short sleep duration was defined as total sleep time<6 hours.

resultsThe risk of 25(OH)D deficiency was observed in 59.5% of the sample, affecting more individuals of the female gender, obese, with African American ethnicity, and those that were smokers, sedentary and presented hypertension and diabetes. In the final logistic model adjusted for age, gender, ethnicity, obesity, smoking, hypertension, diabetes, sedentary lifestyle, seasonality and creatinine serum levels, both OSA and short sleep duration showed significant independent associations with the risk of 25(OH)D deficiency (moderate OSA: OR for 25(OH)D<30 = 2.21, 95% CI: 1.35-3.64, p<0.01; severe OSA: OR for 25(OH)D<30 = 1.78, 95% CI: 1.06-3.00, p = 0.03; short sleep duration: OR for 25(OH)D<30 = 1.61, 95% CI: 1.15-2.26, p = 0.01). After a subgroup analysis, similar results were observed only in participants ≥50 years.

conclusionOSA and short sleep duration are independently associated with the risk of 25(OH)D deficiency in an adult population. Age-related changes in vitamin D metabolism and the frequency of sleep disorders may be involved in these associations. Future studies exploring whether 25(OH)D levels may modulate OSA and sleep curtailment-related outcomes are needed.

Indexed as

AdultBlack or African AmericanBlack PeopleCross-Sectional StudiesDiabetes MellitusFemaleHumansHypertensionMaleMiddle AgedObesityPolysomnographyRisk FactorsSedentary BehaviorSeverity of Illness IndexSleepVitamin D

Identifiers

PMID28686746
PMCPMC5501615
OpenAlexW2733325552

What OpenQuestion holds

Textmetadata
LicenceCC BY
Read underepoch 390

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.