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The Japan Environment and Children's Study

The Japan Environment and Children's Study - JECS

Status
Active, not recruiting
Phases
Unknown
Study type
Observational
Source
JPRN
Registry ID
JPRN-UMIN000030786
Enrollment
100000
Registered
2018-01-15
Start date
2011-01-24
Completion date
Unknown
Last updated
2026-06-29

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Not specific

Interventions

None listed

Sponsors

National Institute for Environmental Studies, JECS Programme Office National Center for Child Health and Development, JECS Medical Support Center
Lead Sponsor
Hokkaido University Sapporo Medical University Asahikawa Medical University The Japanese Red Cross, Hokkaido College of Nursing Tohoku University Fukushima Medical University Chiba University Yokohama City University University of Yamanashi Shinshu University University of Toyama Nagoya City University Kyoto University Doshisha University Osaka University Osaka Women&#39
Collaborator
s and Children&#39
Collaborator
s Hospital Hyogo College of Medicine Tottori University Kochi University University of Occupational and Environmental Health Kyushu University Kumamoto University University of Miyazaki University of the Ryukyu
Collaborator

Eligibility

Sex/Gender
All

Inclusion criteria

Inclusion criteria: (1) A pregnant woman whose expected delivery date must be between 1 August 2011 and 31 March 2014 (2) A pregnant woman must reside in one of the study areas selected by Regional Centres at the time of the recruitment and be expected to reside continually in Japan for the fore-seeable future (3) A pregnant woman must visit a cooperating health care providers selected by a Regional Centre or local government offices to obtain a Mother-Child Health Handbook in a study area during the recruiting period

Exclusion criteria

Exclusion criteria: (1) A pregnant woman does not consent to participate in the study (2) A pregnant woman shows difficulty in comprehending the study procedures or filling out the questionnaires without support (3) A pregnant woman is reportedly not accessible at the time of delivery (e.g. a woman who plans to give birth outside the study area)

Design outcomes

Primary

MeasureTime frame
Five priority outcomes: 1) reproduction and pregnancy complications, 2) congenital anomalies, 3) neuropsychiatric disorders, 4) allergies and immune system deficiencies, 5) metabolism and endocrine system disorders.

Countries

Japan

Contacts

Public ContactShin Yamazaki

National Institute for Environmental Studies JECS Programme Office

yamazaki.shin@nies.go.jp029-850-2226

Outcome results

None listed

Source: JPRN (via WHO ICTRP) · Data processed: Sep 10, 2026