ArticleFrontiers in pediatrics2024
Sustained decline in birth weight and increased rate of preterm infants born small for gestational age in Japan.
Article in Frontiers in pediatrics, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers, 1 of them a synthesis that pooled it.
What it found
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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.
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Who cites it
2 citing papers in PubMed, 1 synthesis or guideline pooled it.
- Impact of Maternal Underweight on Infant and Maternal Outcomes in Japanese Women: A Systematic Review and Meta-analysis.Journal of epidemiology · 2026Pooled it
- Health-Related Quality of Life in Japanese Youth Born Extremely Low-Birthweight: Impact of Attention Deficit Hyperactivity Disorder.Acta paediatrica (Oslo, Norway : 1992) · 2025Article
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Authors and funding
3 authors.
Funding
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Abstract
Background: Birth weights have continued to decline in Japan in recent years. However, secular trend changes such as the birth weight relative to the week of gestation remain to be explored. This study aimed to determine the trends over time in mean birth weight and small for gestational age (SGA) rate for each gestational week. Methods: We used a large dataset of 27,015,792 births obtained from birth certificates between 1997 and 2021. Births from 22 to 41 weeks of gestation were evaluated in six groups (22-24, 25-27, 28-31, 32-33, 34-36, and 37-41 weeks of gestational age). For each group, secular trend changes in the Results: The mean birth weight of preterm infants continued to decrease, and the Conclusions: In Japan, there has been a continuous decline in birth weight and an increase in the rate of preterm SGA infants.
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