Evidence map›Paper›PMID 26483918›Full record

ArticleSleep science (Sao Paulo, Brazil)2014

Sleep complaints in the Brazilian population: Impact of socioeconomic factors.

Camila Hirotsu, Lia Bittencourt, Silverio Garbuio, Monica Levy Andersen, Sergio Tufik

Open access · diamondAbstract read
In one paragraph

Article in Sleep science (Sao Paulo, Brazil), 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 21 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
21citing papers in PubMed, 1 pooled it
1.0field-weighted citation impact, top 20% 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

21 citing papers in PubMed, 1 synthesis or guideline pooled it, 66 citations in OpenAlex.

  1. Pooled it
  2. Article
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  4. The impact of the COVID-19 pandemic on the quality of sleep of medical residents in a tertiary care hospital.Journal of clinical sleep medicine : JCSM : official publication of the American Academy of Sleep Medicine · 2025
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  8. Physical Activity and Sleep in Adults and Older Adults in Southern Brazil.International journal of environmental research and public health · 2023
    Article
  9. Cognitive and psychological factors associated with severe insomnia in Brazilian women: a cross-sectional study.Psicologia, reflexao e critica : revista semestral do Departamento de Psicologia da UFRGS · 2022
    Article
  10. Article
  11. Article
  12. Article
  13. Article
  14. Article
  15. Sleep awareness and education among clinical practitioners.Clinical medicine (London, England) · 2017
    Article
  16. Article
  17. Article
  18. Article
  19. Article
  20. Article
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

5 authors at 1 institution in 1 country.

Camila HirotsuDepartment of Psychobiology, Universidade Federal de São Paulo, São Paulo, Brazil.
Lia BittencourtDepartment of Psychobiology, Universidade Federal de São Paulo, São Paulo, Brazil.
Silverio GarbuioDepartment of Psychobiology, Universidade Federal de São Paulo, São Paulo, Brazil.
Monica Levy AndersenDepartment of Psychobiology, Universidade Federal de São Paulo, São Paulo, Brazil.
Sergio TufikDepartment of Psychobiology, Universidade Federal de 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

National surveys are relevant for the study of sleep epidemiology since they can provide specific data about sleep in large dimension with important implications for the health system. Thus, the aim of this study was to investigate the prevalence of sleep complaints among the Brazilian population using a randomized cluster sample according to region and socioeconomic class. For this, a 3-stage sampling technique was used to randomly select Brazilian subjects of both genders older than 16 years. A total of 2017 subjects, from 132 different cities, were selected to estimate prevalence in the Brazilian population with a sampling error of ±2%. Questions about sleep complaints were administered face-to-face by Instituto Datafolha interviewers on April 10 and 16, 2012. Data were expanded using a weighted variable. The results showed that 76% of the study population suffers from at least 1 sleep complaint, indicating that approximately 108 million Brazilians may be affected by sleep disorders. On average, each subject had 1.9 sleep problems with the most common complaints being light and insufficient sleep, snoring, moving a lot during sleep, and insomnia, which usually occurred more than 3 times per week. Low income was associated with higher number of sleep complaints only in Northeast and Southeast regions. In conclusion, this study showed a high prevalence of sleep complaints in a sample of the Brazilian population, suggesting that sleep disorders may be markedly frequent in the Brazilian population with a possible correlation with the socioeconomic situation of the interviewed subjects.

Indexed as

EpidemiologyPopulationSleepSleep disorderSocioeconomic factors

Identifiers

PMID26483918
PMCPMC4559590
OpenAlexW2121235800

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC-ND
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.