Evidence map›Paper›PMID 41589358›Full record

ArticleJournal of sleep research2026

Prevalence and Risk Factors for Obstructive Sleep Apnea in São Paulo: Findings From the 4th Edition of the EPISONO Study.

Sergio Tufik, Allan Saj Porcacchia, Gabriel Natan Pires, Monica Levy Andersen

Abstract read
In one paragraph

Article in Journal of sleep research, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
5citing papers in PubMed, 1 pooled it
–field-weighted citation impact
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

5 citing papers in PubMed, 1 synthesis or guideline pooled it.

  1. Pooled it
  2. Article
  3. Article
  4. Article
  5. Shared mechanisms linking PMFrontiers in sleep · 2026
    Review
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

4 authors.

Sergio TufikDepartamento de Psicobiologia, Universidade Federal de São Paulo (UNIFESP), São Paulo, Brazil.ORCID 0000-0002-3804-8865
Allan Saj PorcacchiaDepartamento de Psicobiologia, Universidade Federal de São Paulo (UNIFESP), São Paulo, Brazil.ORCID 0000-0002-0133-9036
Gabriel Natan PiresDepartamento de Psicobiologia, Universidade Federal de São Paulo (UNIFESP), São Paulo, Brazil.ORCID 0000-0003-0411-0111
Monica Levy AndersenDepartamento de Psicobiologia, Universidade Federal de São Paulo (UNIFESP), São Paulo, Brazil.ORCID 0000-0002-1894-6748

Funding

Associação Fundo de Incentivo à PesquisaConselho Nacional de Desenvolvimento Científico e TecnológicoFundação de Amparo à Pesquisa do Estado de São Paulo #2020/13467-8Fundação de Amparo à Pesquisa do Estado de São Paulo #2021/05920-7
6 · The paper itself

Abstract

Obstructive sleep apnea (OSA) affects around 936 million individuals worldwide, making it the most prevalent breathing-related sleep disorder. The aim was to estimate the prevalence of OSA in São Paulo, Brazil, based on data from the São Paulo Epidemiologic Sleep Study (EPISONO) 4th edition. This was a cross-sectional study with a probabilistic sample obtained through a 4-stage cluster sampling method aiming to represent the population according to age (20-80 years), gender and socio-economic condition. Participants underwent in-lab full-night polysomnography and completed sleep-related questionnaires. The diagnosis of OSA followed the most recent guidelines of the American Academy of Sleep Medicine. Prevalences were calculated and a multivariable logistic regression evaluated risk factors associated with OSA. The total sample included 769 individuals (452 women). The general adjusted prevalence of OSA was 37.12%, being higher in men (44.88%) than women (30.79%). Greater prevalence was observed in advanced age groups. Moderate and severe OSA affected 11.5% and 7.9% of the participants, respectively. Ageing, body mass index and being male were associated with a higher risk of OSA, especially in moderate-to-severe cases. The 4th edition of EPISONO found that more than one-third of the population had OSA, reaching 45% in males. These results underscore the need for public health actions based on scalable prevention strategies and equitable access to OSA therapies.

Indexed as

Sleep Apnea, ObstructiveAdultAgedAged, 80 and overAge FactorsBody Mass IndexBrazilCross-Sectional StudiesFemaleHumansMaleMiddle AgedPolysomnographyPrevalenceRisk FactorsSex Factorsepidemiologyobstructive sleep apneaprevalencepublic healthsleep

Identifiers

PMID41589358
PMCPMC13193509

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.