Evidence map›Paper›PMID 32197593›Full record

ArticleBMC pregnancy and childbirth2020

Characteristics of sleep/wake problems and delivery outcomes among pregnant Japanese women without gestational complications.

Shiho Umeno, Chiho Kato, Yuki Nagaura, Hideaki Kondo, Hiromi Eto

Open access · goldAbstract read
PubMed Full text at PMC Publisher
In one paragraph

Article in BMC pregnancy and childbirth, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 8 papers, 4 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
8citing papers in PubMed, 4 pooled it
2.1field-weighted citation impact, top 13% 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

8 citing papers in PubMed, 4 syntheses or guidelines pooled it, 26 citations in OpenAlex.

  1. Pooled it
  2. Pooled it
  3. Pooled it
  4. Pooled it
  5. Time-varying restless legs syndrome and risk of incident perinatal depression.Journal of clinical sleep medicine : JCSM : official publication of the American Academy of Sleep Medicine · 2026
    Article
  6. Observational
  7. Article
  8. 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 4 institutions in 2 countries.

Shiho UmenoDepartment of Reproductive Health, Nagasaki University, Institute of Biomedical Sciences, 1-7-1 Sakamoto, Nagasaki, 852-8520, Japan.
Chiho KatoDepartment of Reproductive Health, Nagasaki University, Institute of Biomedical Sciences, 1-7-1 Sakamoto, Nagasaki, 852-8520, Japan.ORCID https://orcid.org/0000-0001-9336-5225
Yuki NagauraDepartment of General Medicine, Nagasaki University Graduate School of Biomedical Sciences, 1-7-1 Sakamoto, Nagasaki, 852-820, Japan.ORCID https://orcid.org/0000-0002-1580-1439
Hideaki KondoInternational Institute for Integrative Sleep Medicine, University of Tsukuba, 1-2 Kasuga, Tsukuba, Ibaraki, 305-8550, Japan. kondo.hideaki.gb@u.tsukuba.ac.jp.ORCID https://orcid.org/0000-0003-0856-6650
Hiromi EtoDepartment of Reproductive Health, Nagasaki University, Institute of Biomedical Sciences, 1-7-1 Sakamoto, Nagasaki, 852-8520, Japan.ORCID https://orcid.org/0000-0002-2652-4000
Nagasaki University · JPJapanese Red Cross College of Nursing · JPRed Cross Hospital · GRUniversity of Tsukuba · JP

Funding

Japan Society for the Promotion of Science JP16X15931
6 · The paper itself

Abstract

backgroundFrequently observed sleep/wake problems among pregnant women need comprehensive evaluation. This study was conducted to clarify the sleep/wake problems among pregnant women without gestational complications during the second and third trimester and the effects of sleep/wake problems on delivery outcomes.

methodsA total of 88 Japanese pregnant women participated in this study. In their second and third trimester, subjective sleep quality, insomnia severity, excessive daytime sleepiness (EDS), and restless legs syndrome/Willis-Ekbom disease (RLS/WED) were assessed using questionnaires; also, sleep disordered breathing (SDB) was screened using a pulse oximeter.

resultsFrom the second to the third trimester, an increasing tendency of sleep/wake problems was observed. During the third trimester, the percentages of women experiencing decreased subjective sleep quality, difficulty maintaining sleep (DMS), EDS, RLS/WED, and 3% oxygen desaturation index (ODI) values ≥5/h were 62.5, 45.5, 48.9, 9.1, and 29.5%, respectively. In a logistic regression analysis for EDS in the third trimester, the adjusted odds ratio (95% confidence interval) of total sleep duration < 6 h, moderate to severe DMS, and 3% ODI values ≥5/h were 3.25 (1.16-9.10), 4.74 (1.60-14.00), and 0.90 (0.28-2.89), respectively. Although short sleep durations, decreased subjective sleep quality, EDS, and SDB did not affect delivery outcomes or the infant's condition, the percentage of women undergoing cesarean sections in the severe insomnia group was significantly higher (p = 0.008).

conclusionsSleep/wake problems were frequent during pregnancy, especially during the third trimester. EDS among pregnant women was associated with shorter sleep durations and DMS rather than SDB. The effect of factors related to insomnia on delivery outcomes should thus be considered a crucial problem among pregnant Japanese women without gestational complications in clinical practice.

Indexed as

Pregnant PeopleAdultCesarean SectionFemaleHumansJapanPregnancyPregnancy ComplicationsPregnancy OutcomePregnancy Trimester, SecondPregnancy Trimester, ThirdSleep Wake DisordersExcessive daytime sleepinessInsomniaRestless legs syndrome/Willis-Ekbom diseaseSleep disordered breathingSleep quality

Identifiers

PMID32197593
PMCPMC7082997
OpenAlexW3012803225

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.