The CHAMACOS Study is a longitudinal cohort study of mother-child pairs living in a California farmworker community. Participants include more than 800 children (536 followed since birth, 305 followed since age 9) and their mothers. Fathers also completed a questionnaire at delivery. Starting in October 1999, CHAMACOS enrolled from prenantal clinics pregnant women living in California's Salinas Valley and has followed these families for 19 years, measuring exposures to pesticides and other chemicals and assessing children’s growth, health, and development every 1-2 years. In 2010-2011, the study expanded by enrolling additional 9-year-old children into the cohort and are being followed until adulthood.
Study design
Cohort - primary caregiver and child, Cohort - birth
Number of participants at first data collection
536 (babies)
601 (mothers)
Recruitment is ongoing
Age at first data collection
Birth (participants)
≥ 18 years (mothers)
Participant year of birth
1999 (babies)
Varied (mothers)
Participant sex
All
Representative sample at baseline?
No
Sample features
Country
Year of first data collection
1999
Primary Institutions
University of California, Berkeley (UC Berkeley)
Profile paper DOI
Funders
National Institute for Occupational Safety and Health (NIOSH)
National Institute of Environmental Health Sciences (NIEHS)
Passport Foundation
United States Environmental Protection Agency (EPA)
Ongoing?
Yes
Data types collected
Engagement
Keywords
Consortia and dataset groups