Evidence map›Paper›PMID 27194093›Full record

ArticleBMC pregnancy and childbirth2016

A description of sleep behaviour in healthy late pregnancy, and the accuracy of self-reports.

Jordan P R McIntyre, Cayley M Ingham, B Lynne Hutchinson, John M D Thompson, Lesley M McCowan, Peter R Stone, Andrew G Veale, Robin Cronin, Alistair W Stewart, Kevin M Ellyett and 1 more

Open access · goldAbstract read
In one paragraph

Article in BMC pregnancy and childbirth, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 23 papers, 3 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
23citing papers in PubMed, 3 pooled it
4.5field-weighted citation impact, top 6% 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

23 citing papers in PubMed, 3 syntheses or guidelines pooled it, 40 citations in OpenAlex.

  1. Pooled it
  2. Pooled it
  3. Pooled it
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  6. Trial
  7. Objectively Measured Maternal Supine Sleep and Fetal Growth: A Prospective Cohort Study.BJOG : an international journal of obstetrics and gynaecology · 2026
    Article
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  17. Observational
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  20. Association of Adverse Pregnancy Outcomes With Self-Reported Measures of Sleep Duration and Timing in Women Who Are Nulliparous.Journal of clinical sleep medicine : JCSM : official publication of the American Academy of Sleep Medicine · 2018
    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

11 authors at 3 institutions in 1 country.

Jordan P R McIntyreDepartment of Obstetrics and Gynaecology, University of Auckland, Auckland, New Zealand. j.mcintyre@auckland.ac.nz.
Cayley M InghamDepartment of Paediatrics, Child and Youth Health, University of Auckland, Auckland, New Zealand.
B Lynne HutchinsonDepartment of Paediatrics, Child and Youth Health, University of Auckland, Auckland, New Zealand.
John M D ThompsonDepartment of Paediatrics, Child and Youth Health, University of Auckland, Auckland, New Zealand.
Lesley M McCowanDepartment of Obstetrics and Gynaecology, University of Auckland, Auckland, New Zealand.
Peter R StoneDepartment of Obstetrics and Gynaecology, University of Auckland, Auckland, New Zealand.
Andrew G VealeNew Zealand Respiratory and Sleep Institute, Auckland, New Zealand.
Robin CroninDepartment of Obstetrics and Gynaecology, University of Auckland, Auckland, New Zealand.
Alistair W StewartDepartment of Epidemiology and Biostatistics, School of Population Health, University of Auckland, Auckland, New Zealand.
Kevin M EllyettRespiratory Measurement Laboratory, Auckland District Health Board, Auckland, New Zealand.
Edwin A MitchellDepartment of Paediatrics, Child and Youth Health, University of Auckland, Auckland, New Zealand.
University of Auckland · NZAuckland District Health Board · NZNZ Respiratory & Sleep Institute · NZ

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundThe importance of maternal sleep and its contribution to maternal and fetal health during pregnancy is increasingly being recognised. However, the ability to accurately recall sleep practices during pregnancy has been questioned. The aim of this study is to test the accuracy of recall of normal sleep practices in late pregnancy.

methodsThirty healthy women between 35 and 38 weeks of gestation underwent level III respiratory polysomnography (PSG) with infrared digital video recordings in their own homes. Data regarding sleep positions, number of times getting out of bed during the night and respiratory measures were collected. A sleep questionnaire was administered the morning after the recorded sleep. Continuous data were assessed using Spearman's Rho and Bland-Altman. Cohen's Kappa was used to assess recall in the categorical variables.

resultsTwo-thirds of participants went to sleep on their left side. There was good agreement in sleep onset position between video and questionnaire data (Kappa 0.52), however the there was poor agreement on position on wakening (Kappa 0.24). The number of times getting out of bed during the night was accurately recalled (Kappa 0.65). Twenty five out of 30 participants snored as recorded by PSG. Questionnaire data was inaccurate for this measure. Bland-Altman plots demonstrated acceptable agreement between video and questionnaire data for estimated sleep duration, but not the time taken to fall asleep (sleep latency). One participant had mild obstructive sleep apnoea and another probable high upper airways resistance.

conclusionsSleep onset position, sleep duration and the number of times getting out of bed during the night were accurately recalled, but sleep latency and sleep position on waking were not. This study identifies the sleep variables that can be accurately obtained by questionnaire and those that cannot.

Indexed as

Diagnostic Self EvaluationAdultFemaleHealthy VolunteersHumansPolysomnographyPregnancyPregnancy ComplicationsPregnancy Trimester, ThirdSelf ReportSleepSleep Wake DisordersSurveys and QuestionnairesYoung AdultPolysomnographyPregnancyQuestionnaireSelf-reportSleep study

Identifiers

PMID27194093
PMCPMC4870756
OpenAlexW2401682473

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.