Indianapolis-Ibadan Dementia Project (IIDP)
The IIDP is a prospective comparative study of cognitive ageing and dementia in two elderly, community-dwelling populations: African Americans living in Indianapolis, USA; and Yoruba living in Ibadan, Nigeria. The project recruited over 8,000 participants at two different time points. In 1992, 2,212 African Americans and 2,494 Nigerians, aged 65 years or above were enrolled in the study. In 2001, each cohort was enriched with nearly 2,000 additional participants, aged 70 years or older. Participants have been followed-up every 2 to 3 years with up to 7 extensive neurological and physical evaluations per individual.
Study design
Cohort
Number of participants at first data collection
2,212 (African American participants)
2,494 (Yoruba participants)
Age at first data collection
≥ 65 years (participants)
Participant year of birth
Varied (participants)
Participant sex
All
Representative sample at baseline?
No
Sample features
Countries
Year of first data collection
1992
Primary Institutions
Indiana University School of Medicine (IU School of Medicine)
University of Ibadan (UI)
Links
iidpportal.medicine.iu.edu/index.html
cheba.unsw.edu.au/consortia/cosmic/studies/the-indianapolis-ibadan-dementia-project
Profile paper DOI
Funders
National Institute on Aging (NIA)
Ongoing?
No
Data types collected
- Computer, paper or task testing (e.g. cognitive testing, theory of mind doll task, attention computer tasks)
- Interview – face-to-face
- Physical or biological assessment (e.g. blood, saliva, gait, grip strength, anthropometry)
- None
- Computerized tomography (CT)
- None
Engagement
Keywords
Consortia and dataset groups
