Evidence map›Paper›PMID 34214100›Full record

ArticlePloS one2021

Weight gain during twin pregnancy with favorable pregnancy outcomes in Japan: A retrospective investigation for new criteria based on perinatal registry data.

Soichiro Obata, Mai Shimura, Toshihiro Misumi, Sayuri Nakanishi, Ryosuke Shindo, Etsuko Miyagi, Shigeru Aoki

Abstract read
In one paragraph

Article in PloS one, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 7 papers.

0numbers the graph read from it
0cells of the map it votes in
7citing papers in PubMed
–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

7 citing papers in PubMed.

  1. Observational
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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

7 authors.

Soichiro ObataPerinatal Center for Maternity and Neonates, Yokohama City University Medical Center, Yokohama, Japan.ORCID 0000-0002-4107-0844
Mai ShimuraPerinatal Center for Maternity and Neonates, Yokohama City University Medical Center, Yokohama, Japan.
Toshihiro MisumiDepartment of Biostatistics, Yokohama City University School of Medicine, Yokohama, Japan.
Sayuri NakanishiPerinatal Center for Maternity and Neonates, Yokohama City University Medical Center, Yokohama, Japan.
Ryosuke ShindoPerinatal Center for Maternity and Neonates, Yokohama City University Medical Center, Yokohama, Japan.
Etsuko MiyagiDepartment of Obstetrics and Gynecology, Yokohama City University Hospital, Yokohama, Japan.ORCID 0000-0002-5492-0844
Shigeru AokiPerinatal Center for Maternity and Neonates, Yokohama City University Medical Center, Yokohama, Japan.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

In 2009, the United States Institute of Medicine (IOM) reported the optimal gestational weight gain (GWG) during twin pregnancy based on the pre-pregnancy body mass index (BMI). However, there are ethnic variations in the relationship between GWG and pregnancy outcomes. We aimed to establish the criteria for optimal GWG during twin pregnancy in Japan. The study included cases of dichorionic diamniotic twin pregnancy registered in the Japan Society of Obstetrics and Gynecology Successive Pregnancy Birth Registry System between 2013 and 2017. We analyzed data for cases wherein both babies were appropriate for gestational age and delivered at term. Cases were classified into four groups based on the pre-pregnancy BMI: underweight (BMI <18.5 kg/m2), normal weight (18.5 kg/m2 ≤BMI< 25.0 kg/m2), overweight (25.0 kg/m2 ≤BMI< 30.0 kg/m2), and obese (BMI ≥30.0 kg/m2) and we calculated the 25th-75th percentile range for GWG for the cases. The 3,936 cases were included. The GWG ranges were 11.5-16.5 kg, 10.3-16.0 kg, 6.9-14.7 kg, and 2.2-11.7 kg in the underweight, normal weight, overweight, and obese groups, respectively. Thus, in the current study, the optimal GWG during twin pregnancy was lower than that specified by the IOM criteria. Factoring this in maternal management may improve the outcomes of twin pregnancies in Japan.

Indexed as

Pregnancy OutcomeAdolescentAdultFemaleGestational Weight GainHumansJapanMiddle AgedPregnancyPregnancy, TwinReference ValuesRegistriesRetrospective StudiesYoung Adult

Identifiers

PMID34214100
PMCPMC8253415

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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.