California Teachers Study (CTS)
The California Teachers Study (CTS) is a prospective cohort study of approximately 133,500 current and former public school teachers or administrators who participated in the California State Teachers Retirement System (STRS) in 1995-1996. The cohort has been followed up via questionnaires (six by 2019), surveys and biological samples for CTS sub-projects, and linkage data.
Study design
Cohort - occupational
Number of participants at first data collection
133,477 (participants)
Age at first data collection
Varied (participants)
Participant year of birth
Varied (participants)
Participant sex
Female
Representative sample at baseline?
No
Sample features
Country
Year of first data collection
1995
Primary Institutions
California Department of Health Services
Northern California Cancer Center
University of California, Irvine (UCI)
University of Southern California (USC)
Profile paper DOI
Funders
California Department of Public Health
Centers for Disease Control and Prevention (CDC)
National Institutes of Health (NIH)
State of California
Ongoing?
Yes
Data types collected
- Physical or biological assessment (e.g. blood, saliva, gait, grip strength, anthropometry)
- Self-report questionnaire – online
- Self-report questionnaire – paper or computer assisted
- None
- None
- Geographic, spatial & environmental data
- Healthcare data
- Mortality data
Engagement
Keywords
