Study Documents

Conceptual Plan

• Japan Environment and Children's Study (JECS) Conceptual Plan (March 30, 2023) [PDF 871KB]
  With the continuation of the JECS until participant children reach about 40 years of age, this Conceptual Plan revised the 2010 Edition and outlines the survey’s implementation structure and basic principles until participant children reach 18 years old.
• （Reference）Conceptual Plan 2010 
  Japan Environment and Children's Study (JECS) Conceptual Plan (March 30, 2010) [PDF 2,077 KB]

Study Protocol

Japan Environment and Children's Study (JECS) Study Protocol
Prepared by: Programme Office of Japan Environment and Children's Study, National Institute for Environmental Studies

• Japanese (ver.4.1) [PDF 1,312KB]
• English (ver. 1.4) [PDF 798 KB]

Japan Environment and Children's Study (JECS) Sub-Cohort Study Protocol　Prepared by: Programme Office of Japan Environment and Children's Study, National Institute for Environmental Studies

• Japanese (ver. 4.20) [PDF 581KB]
• English (ver. 1.01) [PDF 140KB]

Hypotheses Book

• Japan Environment and Children's Study (JECS) Hypotheses Book (March 2010) [PDF 1,324 KB]

Guidance for Epidemiological Statistics

• Guidance on the collation of JECS Results ver. 2.1 (July 31, 2015) [PDF 696KB]

Other reports

Materials prior to launch of JECS

• Report of the Advisory Commission for Children's Environmental Health (August 2006)
• Report of the Advisory Committee of the Epidemiological Research for Children's Environmental Health (March 2008) [PDF：1,056KB]

Report of the Health and Environment Epidemiological Study Working Group

• Report of the Health and Environment Epidemiological Study Working Group (March 2022) [PDF：269KB]

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