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Racial/Ethnic Differences in Trust/Mistrust and Its Effect on Diabetes Outcomes

This study has been completed.
Information provided by (Responsible Party):
Department of Veterans Affairs Identifier:
First received: September 28, 2006
Last updated: September 18, 2014
Last verified: September 2014
  1. Determine racial/ethnic differences in trust in physicians and mistrust of the health care system among veterans with Type 2 Diabetes.
  2. Determine the predictive power of trust in physicians and mistrust of the health care system on personal health practices and health outcomes in a prospective cohort of veterans with Type 2 Diabetes


Study Type: Observational
Study Design: Observational Model: Cohort
Time Perspective: Cross-Sectional
Official Title: Racial/Ethnic Differences in Trust/Mistrust and Its Effect on Diabetes Outcomes

Resource links provided by NLM:

Further study details as provided by Department of Veterans Affairs:

Primary Outcome Measures:
  • General Trust in Physicians Scale (GTIPS) [ Time Frame: 12 months following enrollment ] [ Designated as safety issue: No ]
    The GTIPS is a valid and reliable 11-item measure of general trust in physicians in the domains of dependability, confidence, and confidentiality of information. All items are fashioned in a 5-point Likert format with a minimum score of 11 and maximum of 55. Higher scores indicate more trust in physicians.

  • Health Care System Distrust Scale [ Time Frame: 12 months after enrollment ] [ Designated as safety issue: No ]
    Health Care System Distrust Scale is a valid and reliable 10-item measure of distrust of the health care system, measuring honesty confidentiality and confidence. All questions are measured on a Likert scale, with scores ranging from a minimum of 10 to a maximum of 50. Higher scores indicate more distrust in the health care system.

Secondary Outcome Measures:
  • Hemoglobin A1c [ Time Frame: 12 months after enrollment ] [ Designated as safety issue: No ]
  • Systolic Blood Pressure [ Time Frame: 12-months after enrollment ] [ Designated as safety issue: No ]
  • Diastolic Blood Pressure [ Time Frame: 12-months after enrollment ] [ Designated as safety issue: No ]
  • LDL-cholesterol [ Time Frame: 12-months after enrollment ] [ Designated as safety issue: No ]

Enrollment: 300
Study Start Date: November 2004
Study Completion Date: January 2009
Primary Completion Date: January 2009 (Final data collection date for primary outcome measure)
Group 1
Adults (age 18 or older) with type 2 diabetes.

  Show Detailed Description


Ages Eligible for Study:   18 Years and older
Genders Eligible for Study:   Both
Accepts Healthy Volunteers:   No
Sampling Method:   Non-Probability Sample
Study Population

equal number of White and Black Americans over the age of 18 with Type II diabetes


Inclusion Criteria:

  • Patients for this study will be recruited from the Ralph H. Johnson VAMC in Charleston, South Carolina.
  • American veterans aged 18 years and older with Type 2 Diabetes will be recruited.

Exclusion Criteria:

  • Children will not be included as this study pertains to type 2 diabetes, which is not a disease of children.
  • Non-English speaking patients are excluded to eliminate bias in the response to questionnaires because these questionnaires have only been validated in English speaking patients.
  • We decided to exclude cognitively impaired individuals because of the complexity of the survey instruments.
  Contacts and Locations
Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the Contacts provided below. For general information, see Learn About Clinical Studies.

Please refer to this study by its identifier: NCT00383110

United States, South Carolina
Ralph H Johnson VA Medical Center, Charleston
Charleston, South Carolina, United States, 29401-5799
Sponsors and Collaborators
Principal Investigator: Leonard E. Egede, MD MS Ralph H Johnson VA Medical Center, Charleston
  More Information

No publications provided

Responsible Party: Department of Veterans Affairs Identifier: NCT00383110     History of Changes
Other Study ID Numbers: LIP 82-001, HR#11259
Study First Received: September 28, 2006
Results First Received: August 4, 2014
Last Updated: September 18, 2014
Health Authority: United States: Federal Government

Keywords provided by Department of Veterans Affairs:
Health Outcomes
Racial Preference
Clinical Trial
Ethnic Differences

Additional relevant MeSH terms:
Diabetes Mellitus
Endocrine System Diseases
Glucose Metabolism Disorders
Metabolic Diseases processed this record on November 24, 2014