South Asian HeArt Risk Assessment Project - Trial (SAHARA-Trial) (SAHARA)

South Asian HeArt Risk Assessment Project - Trial

People who originate from the Indian subcontinent known as South Asians are the fastest growing group of non-white Canadians. They suffer an excess prevalence of abdominal obesity, type 2 diabetes and heart disease. They also develop these risk factors at significantly lower body weight and at younger ages compared to people of European origin. The purpose of SAHARA (South Asian HeArt Risk Assessment) Trial, is to recruit 330 South Asians from Ontario (Principal Investigator: Dr. Sonia Anand) and British Columbia (Co-investigator: Dr. Scott Lear), who use the internet, email and other multimedia devices. Among these participants, the investigators will compare the effectiveness of a 12-month interactive multi-media health behaviour intervention to usual care in reducing cardiac risk factors. This intervention enables participants to set their health goals and provides health messaging and feedback designed to improve their smoking, dietary habits and physical activity. In addition, the investigators will test if knowledge of genetic risk for heart attack influences behaviour change and their heart health risk factor profile. The information generated from SAHARA will enable individuals, physicians, health professionals, and policy makers to develop risk factor modification programs to prevent cardiovascular disease in this high-risk group.

Study Overview

• Status: Unknown
• Conditions: Cardiovascular Diseases; Diabetes; Abdominal Obesity
• Intervention / Treatment: Behavioral: Usual Care; Behavioral: Multimedia Lifestyle Improvement

Detailed Description

Introduction: Coronary heart disease (CHD) remains the major cause of disease burden globally, and the rising prevalence of obesity and adult onset diabetes is predicted to potentiate the CHD epidemic in developing countries, and in high risk populations, including people who originate from the Indian subcontinent (South Asians). More than 1.2 million people of South Asian origin live in Canada and they are the fastest growing group of non-white Canadians. Our previous work among South Asians has shown that, compared to white Caucasians in Canada, they suffer from a 2.5 times excess prevalence of elevated glucose (dysglycemia), and CHD. They also develop abnormal glucose, lipids (elevated apolipoprotein B & reduced apolipoprotein Al) and blood pressure at significantly lower body mass index values compared to white Caucasians (21 vs. 30). Successful interventions which prevent or improve myocardial infarction (MI) risk factors among South Asians are urgently needed.

Objectives: Among South Asian men and women ≥ 30 years who live in Canada we propose:

1. To test the effectiveness of a culturally-tailored multimedia intervention designed to improve health behaviours including dietary habits, sedentary behaviours, physical activity, and tobacco use, in order to improve their MI risk factor profile.
2. To test if knowledge of genetic risk for MI as determined by the 9p21 variant genotype influences behaviour change and MI risk factor profile.
3. To determine the change in the MI risk score and clinical events including MI, death, development of new diabetes, and development of new hypertension over the 6 months follow-up.

Design & Methods: People of South Asian ancestry defined as people whose ancestors originate from the Indian subcontinent (India, Pakistan, Bangladesh and Sri Lanka) ≥ 30 years age will be eligible for SAHARA. Subjects with no access to e-mail, text messaging or smart phones and who have suffered previous coronary heart disease will be excluded. 330 subjects will undergo a brief cardiac risk factor assessment including collection of data on questionnaire, physical measurement (i.e. weight, height, waist and hip circumference, and blood pressure), and a blood sample will be collected to measure apolipoproteins and glucose. All eligible and consenting subjects will be randomized 1:1 to intervention versus control. The intervention group will include goal setting, self monitoring and participants will receive regular health messaging using electronic media regarding smoking, dietary habits & physical activity. The control group will receive usual advice and no regular health messaging. The intervention will last for 12 months after randomization and the effectiveness of this intervention will be evaluated using the change in the cardiac risk score after 12 months.

Summary: South Asians are the fastest growing group of Canadians. They suffer an excess prevalence of cardiac risk factors and MI at a younger age compared to people of European origin. The SAHARA project will enable us to use simple but validated tools to assess the MI risk profile among South Asian men and women from Ontario and British Columbia, and we will test a culturally-tailored multimedia intervention to determine if improvement in the MI risk factor profile can be achieved and sustained. If this intervention is successful it will be easily scalable, and has the potential to be delivered to a large proportion of the South Asian community in Canada.

• Study Type: Interventional
• Enrollment (Actual): 343
• Phase: Not Applicable

Contacts and Locations

Study Locations

• Canada
  • Ontario
    • Hamilton, Ontario, Canada, L8L 2X2
      • Population Health Research Institute

Participation Criteria

Eligibility Criteria

• Ages Eligible for Study: 30 years to 70 years (Adult, Older Adult)
• Accepts Healthy Volunteers: Yes
• Genders Eligible for Study: All

Description

Inclusion Criteria:

• South Asian Ancestry (originating from India, Pakistan, Bangladesh and Sri Lanka);
• Greater than or equal to 30 years of age;
• No previous cardiovascular disease
• Provided an email address

Exclusion Criteria:

• Another member in household is enrolled in SAHARA
• Currently pregnant

Study Plan

How is the study designed?

Design Details

• Primary Purpose: Prevention
• Allocation: Randomized
• Interventional Model: Parallel Assignment
• Masking: None (Open Label)

Number of Arms

2

Arms and Interventions

Participant Group / Arm	Intervention / Treatment
Active Comparator: Multimedia Lifestyle Improvement; Includes goal setting, self monitoring and participants will receive regular health messaging using electronic media regarding smoking, dietary habits & physical activity	Behavioral: Multimedia Lifestyle Improvement; Goal setting to improve diet, physical activity or smoking behaviours; Regular health messaging related to the participant's goal, sent by email or text messaging, based on participant preference.
Placebo Comparator: Usual Care; Includes usual advice and no regular health messaging.	Behavioral: Usual Care; Participant will be refered to SAHARA study website to get information on healthy lifestyle and to get regular update for the course of follow-up.

What is the study measuring?

Primary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Effectiveness of a 12 Month Culturally-Specific Multi-media Intervention on Heart Health Risk	To test the effectiveness of a 12 month culturally-specific multi-media intervention which provides health messaging and feedback regarding optimal strategies for individuals greater than 30 years to improve their dietary habits, sedentary behaviours, physical activity, and tobacco use. Outcome measure (heart risk score) will be assessed based on the Interheart Modifiable Risk Score assessed at baseline and 12 months from randomization	Baseline and 12 months from randomization

Secondary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Influence of Knowledge of Personal Genetic Risk for Myocardial Infarction on Health Behaviours	To determine if knowledge of personal genetic risk for Myocardial Infarction (MI)and Diabetes influences the health behaviours associated with MI risk factors. Outcome measure (health behaviour) will be assessed from participants' self-reported questionnaire at baseline and 12 months from randomization	Baseline and 12 months from randomization
Change in Diabetes Status	To determine the change in diabetes status. Outcome measure (diabetes status) will be assessed from results from participants' self-reported questionnaires and bloodwork at baseline and 12 months from randomization.	Baseline and 12 months from randomization
Change in Hypertension Status	To determine the change in hypertension status. Outcome measure (hypertension status) will be assessed from results from the participants' self-reported questionnaires and physical measurements at baseline and 12 months from randomization.	Baseline and 12 months from randomization

Collaborators and Investigators

• Sponsor: McMaster University
• Investigators: Principal Investigator: Sonia Anand, MD, PhD, McMaster University; Hamilton Health Sciences; Population Health Research Institute

Publications and helpful links

General Publications

• Anand SS, Samaan Z, Middleton C, Irvine J, Desai D, Schulze KM, Sothiratnam S, Hussain F, Shah BR, Pare G, Beyene J, Lear SA; South Asian Heart Risk Assessment Investigators. A Digital Health Intervention to Lower Cardiovascular Risk: A Randomized Clinical Trial. JAMA Cardiol. 2016 Aug 1;1(5):601-6. doi: 10.1001/jamacardio.2016.1035.

Study record dates

Study Major Dates

• Study Start: June 1, 2012
• Primary Completion (Actual): December 1, 2014

Study Registration Dates

• First Submitted: April 18, 2013
• First Submitted That Met QC Criteria: April 23, 2013
• First Posted (Estimate): April 26, 2013

Study Record Updates

• Last Update Posted (Estimate): June 9, 2016
• Last Update Submitted That Met QC Criteria: June 8, 2016
• Last Verified: June 1, 2016

More Information

Terms related to this study

• Keywords: Prevention; Cardiovascular; Ethnicity; Internet; Culture; Text Message
• Additional Relevant MeSH Terms: Overnutrition; Nutrition Disorders; Obesity; Cardiovascular Diseases; Obesity, Abdominal
• Other Study ID Numbers: SAHARA- Trial; MOP 123309 (Other Grant/Funding Number: CIHR)