ArticleMaternal health, neonatology and perinatology2022
Analysis of association between low birth weight and socioeconomic deprivation level in Japan: an ecological study using nationwide municipal data.
Article in Maternal health, neonatology and perinatology, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers.
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3 citing papers in PubMed.
- The relationship between low birth weight and neurological disorders: a prospective cohort study in the UK Biobank.BMC neurology · 2026Article
- Association of grand multiparity with adverse birth outcomes and sociodemographic characteristics: an analysis of nationwide birth data in Japan.Reproductive health · 2025Article
- Newborn Nutritional Status at Birth and Its Association With Maternal Dietary Practices During Pregnancy in Gamo Zone, Southern Ethiopia: A Path Analysis.Food science & nutrition · 2025Article
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Abstract
backgroundSeveral international studies have indicated an association between socioeconomic deprivation levels and adverse birth outcomes. In contrast, those investigating an association between socioeconomic status and low birth weight using nationwide data are limited in Japan. In this study, we investigated an association between municipal socioeconomic deprivation level and low birth weight by an ecological study.
methodsNationwide municipal-specific Vital Statistics data from 2013 to 2017 were used. We calculated the low birth weight rate and standardized incidence ratio (SIR) for low birth weight for each municipality and plotted them on a Japanese map. Furthermore, the correlation coefficient between them and the deprivation level were calculated. In addition, a spatial regression model including other municipal characteristics was used to investigate an association between low birth weight and the deprivation level.
resultsMunicipalities with relatively high SIR for low birth weight were dispersed across all of Japan. The correlation coefficient between the socioeconomic deprivation level and low birth weight rate was 0.196 (p-value < 0.001) among municipalities, and that between the socioeconomic deprivation level and the SIR for low birth weight was 0.260 (p-value < 0.001). In addition, the spatial regression analysis showed the deprivation level was significantly and positively associated with low birth weight.
conclusionsThe socioeconomic deprivation level and low birth weight were positively associated, and a further study using individual data is warranted to verify reasons for the association.
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