Evidence map›Paper›PMID 27503177›Full record

ArticleScientific reports2016

Japanese secular trends in birthweight and the prevalence of low birthweight infants during the last three decades: A population-based study.

Yo Takemoto, Erika Ota, Daisuke Yoneoka, Rintaro Mori, Satoru Takeda

Abstract read
In one paragraph

Article in Scientific reports, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 47 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
47citing papers in PubMed, 2 pooled it
–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

47 citing papers in PubMed, 2 syntheses or guidelines pooled it.

  1. Beyond the mirror: Exploring the impact of maternal body image attitudes on gestational weight gain and maternal and neonatal outcomes, a systematic review.International journal of gynaecology and obstetrics: the official organ of the International Federation of Gynaecology and Obstetrics · 2026
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  15. Analysis of the Incidence of Macrosomia in Japan by Parental Nationalities at 5-year Intervals From 1995 to 2020.Journal of preventive medicine and public health = Yebang Uihakhoe chi · 2023
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  20. Reductions in estimated glomerular filtration rate during puberty in GH-treated children born small for gestational age are associated with prematurity and low birth weight, not the dosage of GH treatment.Clinical pediatric endocrinology : case reports and clinical investigations : official journal of the Japanese Society for Pediatric Endocrinology · 2023
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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

5 authors.

Yo TakemotoDepartment of Obstetrics and Gynaecology, Juntendo University, Tokyo, Japan.
Erika OtaSt. Luke's international university, Graduate school of nursing science, Global Health Nursing, 10-1 Akashicho Chuo-ku Tokyo 104-0044, Japan.
Daisuke YoneokaDepartment of Statistical Science, School of Multidisciplinary Sciences, SOKENDAI (The Graduate University for Advanced Studies), Tokyo, Japan.
Rintaro MoriDepartment of Health Policy, National Center for Child Health and Development, Tokyo, Japan.
Satoru TakedaDepartment of Obstetrics and Gynaecology, Juntendo University, Tokyo, Japan.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Since low birthweight has been correlated with both neonatal and long-term health, we performed this epidemiological study to evaluate the Japanese secular trends in mean birthweight and the prevalence of preterm/term low birthweight infants during the last three decades. We used population-based birth certificate data from January 1979 to December 2010. Time trends were analysed using a linear regression model. During the study period, we observed a significant decrease in the mean birthweight for singleton live births (3,152 ± 436 g in 1979 and 3,018 ± 421 g in 2010 p < 0.001) and an increase in the prevalence of preterm/term low birthweight infants. A 96.3% increase in the proportion of term low birthweight infants was observed during the study period (2.7% in 1979 and 5.3% in 2010). In addition, an increased proportion of preterm/low birthweight infants born to younger women was observed (<35 years vs. ≥35 years). These trends may be related to changing patterns in Japanese women's nutritional status and the relatively strict recommended limit on weight gain during pregnancy. Understanding the long-term trends for singleton births may allow us to identify the associated risk factors and reduce the future socioeconomic burden that is associated with low birthweight infants.

Indexed as

Birth WeightInfant, Low Birth WeightPregnancy OutcomeAdultFemaleHumansInfant, PrematureJapanMaleMaternal AgeOdds RatioPregnancyPremature BirthPrevalenceRegression AnalysisRisk Factors

Identifiers

PMID27503177
PMCPMC4977558

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Registered trials

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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.