Demonstrate the effectiveness of the new Japanese gestational weight gain growth charts in the prevention of low birth weight

2023 Fiscal Year Research-status Report

• Project/Area Number: 23K10077
• Research Institution: National Center for Child Health and Development
• Principal Investigator: オーレリー ピエバーシュ 国立研究開発法人国立成育医療研究センター, 社会医学研究部, 研究員 (50837606)
• Co-Investigator(Kenkyū-buntansha): 小川 浩平 国立研究開発法人国立成育医療研究センター, 周産期センター, 部長 (40526117) ; 諸隈 誠一 九州大学, 医学研究院, 教授 (50380639) ; 三瓶 舞紀子 日本体育大学, 体育学部, 准教授 (70550820)
• Project Period (FY): 2023-04-01 – 2026-03-31
• Keywords: gestational weight gain

Outline of Annual Research Achievements

This project aims to demonstrate the effectiveness of the new gestational weight gain guidelines and growth charts by estimating the percentage of women who achieved the new recommended GWG range between 2020 and 2023.
The research plan was to collect data from a healthcare application, LunaLuna Baby (ルナルナベビーMTI Ltd.) for its large number of users in the general population, and from two hospitals, the NCCHD in Tokyo and the Kyushu University in Fukuoka, to ensure all body mass index categories are covered.
The first year, the applicant received data from LunaLuna Baby application where about 7,500,000 daily weight records of about 83,400 children for 82,500 mothers were received.

Current Status of Research Progress

2: Research has progressed on the whole more than it was originally planned.

Reason

Collecting data from hospitals is taking more time than expected. Nevertheless, we make progress with data from LunaLuna Baby application. Data are been cleaned and primarily analysis are on-going.

Strategy for Future Research Activity

Finalyze analyses with the Lunaluna app and write up a manuscript. We hope also to collect data from hospital sources in the following months.

Causes of Carryover

Funding will be used to collect data in hospitals, participate to conference, and disseminate results in journals.