Analysis of Differences in Preterm Birth Rates According to Household Occupation in Japan From 2007 to 2019

Objectives No studies have examined the association between preterm birth rates and socioeconomic factors in Japan using nationwide statistical data. We analyzed the association between preterm birth rates and household occupation using Vital Statistics data. Methods Aggregated Vital Statistics data...

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Main Authors: Tasuku Okui, Naoki Nakashima
Format: Article
Language:English
Published: Korean Society for Preventive Medicine 2022-07-01
Series:Journal of Preventive Medicine and Public Health
Subjects:
Online Access:http://jpmph.org/upload/pdf/jpmph-22-178.pdf
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author Tasuku Okui
Naoki Nakashima
author_facet Tasuku Okui
Naoki Nakashima
author_sort Tasuku Okui
collection DOAJ
description Objectives No studies have examined the association between preterm birth rates and socioeconomic factors in Japan using nationwide statistical data. We analyzed the association between preterm birth rates and household occupation using Vital Statistics data. Methods Aggregated Vital Statistics data from Japan from 2007 to 2019 were obtained from the Ministry of Health, Labour and Welfare. From the data, the number of births according to year, age group, gestational period, number of pregnancies, and household occupation were used in this study. Crude preterm birth rates and preterm birth rates adjusted by maternal age according to household occupation were calculated for each year. Poisson regression analysis was conducted to evaluate the association between household occupation and preterm births. Results Unemployed households had the highest preterm birth rate, and households with an occupation classification of “full-time worker 2” (an employee at a large company, civil servant, or board member) had the lowest preterm birth rate throughout each period. Poisson regression analysis revealed that unemployed households were statistically significantly associated with a high preterm birth risk. In contrast, the preterm birth rate adjusted by maternal age remained stable throughout each period regardless of household occupation, and preterm birth rates were found not to have increased in recent years in Japan. Conclusions Unemployed households had higher preterm birth rates than other household occupations. Further studies investigating the characteristics of unemployed households are needed to identify the reasons for this disparity.
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spelling doaj.art-2b5e50ee155747dd8efcb1db123773422022-12-22T02:32:54ZengKorean Society for Preventive MedicineJournal of Preventive Medicine and Public Health1975-83752233-45212022-07-0155437137810.3961/jpmph.22.1782229Analysis of Differences in Preterm Birth Rates According to Household Occupation in Japan From 2007 to 2019Tasuku Okui0Naoki Nakashima1Medical Information Center, Kyushu University Hospital, Fukuoka, JapanMedical Information Center, Kyushu University Hospital, Fukuoka, JapanObjectives No studies have examined the association between preterm birth rates and socioeconomic factors in Japan using nationwide statistical data. We analyzed the association between preterm birth rates and household occupation using Vital Statistics data. Methods Aggregated Vital Statistics data from Japan from 2007 to 2019 were obtained from the Ministry of Health, Labour and Welfare. From the data, the number of births according to year, age group, gestational period, number of pregnancies, and household occupation were used in this study. Crude preterm birth rates and preterm birth rates adjusted by maternal age according to household occupation were calculated for each year. Poisson regression analysis was conducted to evaluate the association between household occupation and preterm births. Results Unemployed households had the highest preterm birth rate, and households with an occupation classification of “full-time worker 2” (an employee at a large company, civil servant, or board member) had the lowest preterm birth rate throughout each period. Poisson regression analysis revealed that unemployed households were statistically significantly associated with a high preterm birth risk. In contrast, the preterm birth rate adjusted by maternal age remained stable throughout each period regardless of household occupation, and preterm birth rates were found not to have increased in recent years in Japan. Conclusions Unemployed households had higher preterm birth rates than other household occupations. Further studies investigating the characteristics of unemployed households are needed to identify the reasons for this disparity.http://jpmph.org/upload/pdf/jpmph-22-178.pdfpreterm birthoccupationssocioeconomic factorsjapan
spellingShingle Tasuku Okui
Naoki Nakashima
Analysis of Differences in Preterm Birth Rates According to Household Occupation in Japan From 2007 to 2019
Journal of Preventive Medicine and Public Health
preterm birth
occupations
socioeconomic factors
japan
title Analysis of Differences in Preterm Birth Rates According to Household Occupation in Japan From 2007 to 2019
title_full Analysis of Differences in Preterm Birth Rates According to Household Occupation in Japan From 2007 to 2019
title_fullStr Analysis of Differences in Preterm Birth Rates According to Household Occupation in Japan From 2007 to 2019
title_full_unstemmed Analysis of Differences in Preterm Birth Rates According to Household Occupation in Japan From 2007 to 2019
title_short Analysis of Differences in Preterm Birth Rates According to Household Occupation in Japan From 2007 to 2019
title_sort analysis of differences in preterm birth rates according to household occupation in japan from 2007 to 2019
topic preterm birth
occupations
socioeconomic factors
japan
url http://jpmph.org/upload/pdf/jpmph-22-178.pdf
work_keys_str_mv AT tasukuokui analysisofdifferencesinpretermbirthratesaccordingtohouseholdoccupationinjapanfrom2007to2019
AT naokinakashima analysisofdifferencesinpretermbirthratesaccordingtohouseholdoccupationinjapanfrom2007to2019