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Risk Assessment and Treat Compliance in Hypertension Education Trial (RATCHET)

The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. Read our disclaimer for details.
ClinicalTrials.gov Identifier: NCT00694239
Recruitment Status : Completed
First Posted : June 10, 2008
Last Update Posted : June 30, 2011
Information provided by:

Study Description
Brief Summary:
The RATCHET study assesses if patient knowledge of estimated cardiovascular risk at current and recommended target blood pressure levels improves compliance in the management of hypertension.

Condition or disease Intervention/treatment
Hypertension Dyslipidemia Behavioral: Knowledge of Cardiovascular Risk Assessment

Study Design

Study Type : Interventional  (Clinical Trial)
Estimated Enrollment : 100 participants
Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: Triple (Care Provider, Investigator, Outcomes Assessor)
Primary Purpose: Treatment
Official Title: Evaluation of the Effect of Cardiovascular Risk Assessment in Treatment Compliance in Hypertension
Study Start Date : May 2007
Primary Completion Date : March 2011
Study Completion Date : March 2011

Resource links provided by the National Library of Medicine

MedlinePlus related topics: Health Checkup
U.S. FDA Resources

Arms and Interventions

Arm Intervention/treatment
No Intervention: B
Standard Care
Experimental: A
Risk Assessment plus standard care
Behavioral: Knowledge of Cardiovascular Risk Assessment
Knowledge of Cardiovascular Risk Assessment and risk reduction at target BP, reviewed every 3-6 months.

Outcome Measures

Primary Outcome Measures :
  1. Medication Compliance [ Time Frame: 1 year ]

Secondary Outcome Measures :
  1. Patient perception of cardiovascular risk [ Time Frame: 1 year ]
  2. Pilot Feasibility Study [ Time Frame: 1 year ]
  3. Blood Pressure [ Time Frame: 1 year ]
  4. Cholesterol Level [ Time Frame: 1 year ]
  5. Framingham Risk Score (stroke and coronary artery disease) [ Time Frame: 1 year ]

Eligibility Criteria

Information from the National Library of Medicine

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Ages Eligible for Study:   30 Years to 84 Years   (Adult, Senior)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No

Inclusion Criteria:

  • Essential hypertension (new diagnosis or established diagnosis) meeting criteria for pharmacologic therapy as defined by current guidelines

Exclusion Criteria:

  • Lack of written informed consent
  • Previous myocardial infarction
  • Previous stroke
  • Congestive heart failure
  • Stage 3 or greater chronic kidney disease
  • Pregnancy
  • Usage of medication bubble/blister package
Contacts and Locations

Information from the National Library of Medicine

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.

Please refer to this study by its ClinicalTrials.gov identifier (NCT number): NCT00694239

Canada, Ontario
University of Western Ontario
London, Ontario, Canada, N6A 5A5
Sponsors and Collaborators
Lawson Health Research Institute
University of Western Ontario, Canada
The Physicians' Services Incorporated Foundation
Principal Investigator: Bryan J Har, MD University of Western Ontario, Canada
Principal Investigator: George K Dresser, PhD, MD University of Western Ontario, Canada
More Information

Additional Information:
Responsible Party: George Dresser, University of Western Ontario
ClinicalTrials.gov Identifier: NCT00694239     History of Changes
Other Study ID Numbers: R-07-053
13014E ( Other Identifier: REB )
First Posted: June 10, 2008    Key Record Dates
Last Update Posted: June 30, 2011
Last Verified: June 2011

Keywords provided by Lawson Health Research Institute:

Additional relevant MeSH terms:
Vascular Diseases
Cardiovascular Diseases
Lipid Metabolism Disorders
Metabolic Diseases