Evidence map›Paper›PMID 26483920›Full record

ArticleSleep science (Sao Paulo, Brazil)2014

Temporal sleep patterns in adults using actigraph.

Lia Matuzaki, Rogerio Santos-Silva, Elaine Cristina Marqueze, Claudia Roberta de Castro Moreno, Sergio Tufik, Lia Bittencourt

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 10 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
10citing papers in PubMed, 1 pooled it
1.3field-weighted citation impact, top 18% 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

10 citing papers in PubMed, 1 synthesis or guideline pooled it, 19 citations in OpenAlex.

  1. Pooled it
  2. Article
  3. Article
  4. Article
  5. Article
  6. Observational
  7. Article
  8. Article
  9. Sleep Patterns and Quality in Omani Adults.Nature and science of sleep · 2020
    Article
  10. 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

6 authors at 2 institutions in 1 country.

Lia MatuzakiDepartamento de Psicobiologia, Universidade Federal de São Paulo. Rua Napoleão de Barros 925, CEP 04024-002, São Paulo/SP, Brazil.
Rogerio Santos-SilvaEnvironmental Health Department, School of Public Health, University of São Paulo. Av. Dr. Arnaldo 715, CEP 01246-904, São Paulo/SP, Brazil.
Elaine Cristina MarquezeEnvironmental Health Department, School of Public Health, University of São Paulo. Av. Dr. Arnaldo 715, CEP 01246-904, São Paulo/SP, Brazil.
Claudia Roberta de Castro MorenoEnvironmental Health Department, School of Public Health, University of São Paulo. Av. Dr. Arnaldo 715, CEP 01246-904, São Paulo/SP, Brazil.
Sergio TufikDepartamento de Psicobiologia, Universidade Federal de São Paulo. Rua Napoleão de Barros 925, CEP 04024-002, São Paulo/SP, Brazil.
Lia BittencourtDepartamento de Psicobiologia, Universidade Federal de São Paulo. Rua Napoleão de Barros 925, CEP 04024-002, São Paulo/SP, Brazil.
Universidade de São Paulo · BRUniversidade Federal de São Paulo · BR

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

The aim of the present study was to characterize the temporal patterns of sleep and wakefulness in a sample of the adult subjects from São Paulo city. All subjects filled the Morningness/Eveningness Questionnaire (MEQ) and wore an actigraph for at least three consecutive days. A total of 359 subjects were considered for the analyses. The mean age was 43±14 years, the mean body mass index was 26.7±5.7 kg/m(2), and 60% were female. The mean MEQ score was 58.0±10.7. The sleep pattern evaluated by the actigraphic analyses showed that 92% had a monophasic sleep pattern, 7% biphasic, and 1% polyphasic sleep pattern. Cluster analysis, based on time to sleep onset, sleep efficiency, sleep latency, and total sleep time, was able to identify three different groups denominated: morning type, evening type, and undefined type. Morning type subjects were more frequent, older, and had higher MEQ scores than evening type subjects. Our results showed that the actigraph objectively assessed the sleep-wake cycle and was able to discriminate between morning and evening type individuals. These findings suggest that the actigraph could be a valuable tool for assessing temporal sleep patterns, including the circadian preferences.

Indexed as

ActigraphCircadian preferencesEveningnessMorningnessSleep-wake patternTemporal patterns

Identifiers

PMID26483920
PMCPMC4559592
OpenAlexW2115950911

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.