Clinical trial NCT01841398: South Asian HeArt Risk Assessment Project - Trial (SAHARA-Trial)
Official title: South Asian HeArt Risk Assessment Project - Trial
Study type: INTERVENTIONAL
Overall status: UNKNOWN
Phase: NA
Conditions: Cardiovascular Diseases
Diabetes
Abdominal Obesity
Keywords: Cardiovascular
Prevention
Ethnicity
Culture
Internet
Text Message
Lead sponsor: McMaster University
Sponsor class: OTHER
First posted: 2013-04-26
Enrollment: 343
Sex: ALL
Minimum age (years): 30
Maximum age (years): 70
Standard ages: ADULT
OLDER_ADULT
Accepts healthy volunteers: yes
Allocation: RANDOMIZED
Intervention model: PARALLEL
Primary purpose: PREVENTION

Brief summary: 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.

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.

Eligibility criteria: 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

Primary outcomes:
measure: Effectiveness of a 12 Month Culturally-Specific Multi-media Intervention on Heart Health Risk
timeFrame: Baseline and 12 months from randomization
Secondary outcomes:
measure: Influence of Knowledge of Personal Genetic Risk for Myocardial Infarction on Health Behaviours
timeFrame: Baseline and 12 months from randomization
measure: Change in Diabetes Status
timeFrame: Baseline and 12 months from randomization
measure: Change in Hypertension Status
timeFrame: Baseline and 12 months from randomization
Other outcomes:
Locations:
city: Hamilton
country: Canada
facility: Population Health Research Institute
state: Ontario
Study officials:
affiliation: McMaster University; Hamilton Health Sciences; Population Health Research Institute
name: Sonia Anand, MD, PhD
role: PRINCIPAL_INVESTIGATOR
References:
citation: 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.