Socio-economic Status and Age-related Disability in a Biracial Community

April 13, 2015 updated by: National Institute of Environmental Health Sciences (NIEHS)
The overall goal of the proposed project is to examine the reasons for the higher levels of disability in older people of lower socio-economic status.

Study Overview

Status

Completed

Conditions

Detailed Description

This application is a continuation of an epidemiologic study that investigates the effect of socio-economic disadvantage and neighborhood conditions on disability in older blacks and whites. The proposed project takes place in the context of a population-based, longitudinal study of persons aged 65 years and over who live in a geographically defined, urban, biracial community area in Chicago. During the initial funding period, we have successfully collected yearly disability outcome data, and detailed information on neighborhood conditions using self-report instruments and a systematic neighborhood survey of study area.

The first overall goal of this continuation is to determine the relative contribution and specific nature of the neighborhood conditions that are associated with disability in older adults. The second overall goal is to determine the biological mechanisms through which neighborhood conditions lead to increased disability, focusing specifically on hyperactivity of the hypothalamus-pituitary-adrenal (HPA) axis, via salivary cortisol, and inflammatory processes, via interleukin-6 (IL-6) and C-reactive protein (CRP), obtained from blood samples. To accomplish these goals, we propose to continue yearly collection of disability outcome data and obtain blood samples and salivary cortisol from over 7,000 participants. These data will be integrated with a rich set of existing data on personal characteristics, health conditions, and neighborhood factors to test of series of specific hypotheses related to the overall goals.

Disability is a common and highly prevalent consequence of age-related chronic diseases, and a critical indicator of overall health among older people. Prevention of disability is essential to improve the lives of older people and reduce health care costs. The proposed work will contribute to a better understanding of the specific neighborhood conditions that are associated with increased disability, laying the foundation for more effective policies to prevent disability in future generations of older adults.

Study Type

Observational

Enrollment (Anticipated)

6000

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Locations

  • United States
    • Illinois
      • Chicago, Illinois, United States, 60612
        • Rush University Medical Center

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

65 years and older (Older Adult)

Accepts Healthy Volunteers

Yes

Genders Eligible for Study

All

Description

inclusion criteria: adults aged 65 years and over exclusion criteria: none

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

National Institute of Environmental Health Sciences (NIEHS)

Investigators

  • Principal Investigator: Carlos F. Mendes de Leon, Ph.D., Rush University Medical Center

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start

April 1, 2001

Primary Completion (Actual)

July 1, 2010

Study Completion (Actual)

July 1, 2010

Study Registration Dates

First Submitted

July 24, 2002

First Submitted That Met QC Criteria

July 25, 2002

First Posted (Estimate)

July 26, 2002

Study Record Updates

Last Update Posted (Estimate)

April 14, 2015

Last Update Submitted That Met QC Criteria

April 13, 2015

Last Verified

April 1, 2015

More Information

Terms related to this study

Keywords

Other Study ID Numbers

  • 10902-CP-001

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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