Chicago Health and Aging Study
Population-based study to identify risk factors for Alzheimer's disease, disability, and other age-associated health conditions.
Overview
- Acronym
- CHAP
- Investigators
-
- Contacts
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General Design
- Study design
- Cohort
- Start - End Year
- 1993 - 2011
- General Information on Follow Up (profile, frequency)
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The CHAP study included in-person interviews that were conducted in the participants' homes in approximately three-year cycles, with each subsequent cycle starting immediately after completion of the previous one, for a total of 5 follow-up.
- Recruitment Target
-
- Individuals
- Number of Participants
- 10,801
- Number of Participants with Biological Samples
- 8,000
Access
Availability of data and biosamples
| Possible Access to Data | |
| Possible Access to Biosamples | |
| Other |
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Marker Papers
Bienias JL, Beckett LA, Bennett DA, Wilson RS, Evans DA. Design of the Chicago Health and Aging Project (CHAP). 2003; 5(5): 349-55.
PUBMED 14646025Timeline
Population
The original CHAP study population was selected from three adjacent community areas (Morgan Park, Washington Heights and Beverly) on the south-west side of Chicago. In 1993, the study began with a complete census of the study area, and all residents aged 65 and older were invited to participate. As of the third interview cycle, CHAP began to enroll newly aged participants; that is, community residents that had turned 65 years since the beginning of the study. As of the fourth cycle, CHAP also began to enroll residents from a neighboring community area, Mount Greenwood, to achieve a more even racial balance in its study population.
Selection Criteria
- Minimum age
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65
- Countries
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- United States of America
- Territory
- Chicago
- Ethnic Origin
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- Whites and Blacks
Sample Size
- Number of Participants
- 10,801
- Number of Participants with Biological Samples
- 8,000
- Supplementary information about number of participants
-
The "original cohort", enrolled between 1993 and 1997, included 6,158 participants. In 2000, CHAP began to enroll additional participants from the study community who had turned 65 since inception of the study as “successive age cohorts.”
Data Collection Events
| # | Name | Data sources | Data sources - Biosamples | Start | End |
|---|---|---|---|---|---|
| 0 | CHAP - Baseline |
|
|
1993 (January) | 1997 (May) |
| 1 | CHAP - Follow-up 1 |
|
|
1997 (June) | 2000 (February) |
| 2 | CHAP - Follow-up 2 |
|
|
2000 (March) | 2003 (January) |
| 3 | CHAP - Telephone interviews |
|
2000 (March) | 2011 (December) | |
| 4 | CHAP - Follow-up 3 |
|
|
2003 (February) | 2006 (April) |
| 5 | CHAP - Follow-up 4 |
|
|
2006 (May) | 2009 (January) |
| 6 | CHAP - Follow-up 5 |
|
|
2009 (March) | 2011 (December) |
Participating Studies
| Acronym | Name | Study design | Countries |
|---|
Harmonization Initiatives Included
| Acronym | Name |
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Datasets
| Name | Data Collection Events | Variables |
|---|
Areas of Information Collected
- Socio-demographic and economic characteristics
- Death
- Lifestyle and behaviours
- Physical measures and assessments
- Birth, pregnancy and reproductive health history
- Laboratory measures
- Perception of health, quality of life, development and functional limitations
- Cognition, personality and psychological measures and assessments
- Diseases
- Life events, life plans, beliefs and values
- Symptoms and signs
- Preschool, school and work life
- Medication and supplements
- Social environment and relationships
- Non-pharmacological interventions
- Physical environment
- Health and community care services utilization
- Administrative information
Variables Content Summary
Areas of Information Collected
Areas of Information Collected per per Population and Data Collection Event
Networks
| Acronym | Name | Harmonization Initiatives | Individual Studies |
|---|