Dietary Approach to Stop Hypertension With Sodium (Na) Reduction for Chinese Canadians

Study Overview
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Brief Summary
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The study examined the feasibility of the Dietary Approach to Stop Hypertension with Sodium (Na) Reduction for Chinese Canadian (DASHNa-CC) intervention and its potential effects on blood pressure, health-related quality of life, and health service utilization. Half of participants received usual care while the other half received the DASHNa-CC intervention.

Detailed Description
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Hypertension has been identified as the most important risk factor for cardiovascular diseases and accounts for a large proportion of stroke, myocardial infarction and heart failure in the Chinese population. While unhealthy diet has been identified as a modifiable risk factor for hypertension, there is a lack of culturally sensitive dietary intervention targeting Chinese Canadians. The 8-week DASHNa-CC intervention incorporated Dietary Approach to Stop Hypertension (DASH) diet, sodium reduction with the food therapy of Traditional Chinese Medicine, and included an intervention manual, two sessions of classroom instruction delivered in Mandarin, and a 20-minute telephone follow-up.

Official Title
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Dietary Approach to Stop Hypertension With Sodium (Na) Reduction for Chinese Canadians

Conditions
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Hypertension

Intervention / Treatment
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* Behavioral: DASHNa-CC
* Behavioral: usual care


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: were at least 45 years old; had a systolic blood pressure 140 to 159 mmHg, or a diastolic blood pressure 90 to 99 mmHg, based on pre-intervention baseline assessment; were able to understand (listen) and speak in Mandarin, read and write in Chinese; and had access to a telephone. Exclusion Criteria: used antihypertensive medications or other medications that raise or lower blood pressure during the previous three months; used TCM or professional TCM counselling to decrease blood pressure during the previous three months; used insulin or oral hypoglycemic agents during the previous three months; had a history of a cardiovascular event (stroke, myocardial infarction, percutaneous transluminal coronary angioplasty, coronary artery bypass surgery, or other arteriosclerotic cardiovascular disease related therapeutic procedure) during the previous three months; had a history of congestive heart failure; had a cancer diagnosis or treatment during the past two years; had special dietary requirements; were pregnant, breast feeding, or planned for pregnancy prior to the anticipated end of study; were a household member of another DASHNa-CC participant; or planned to leave the area prior to the anticipated end of study.

Ages Eligible for Study
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Minimum Age: 45 Years

Sexes Eligible for Study
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All

Accepts Healthy Volunteers
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No

Study Plan
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How is the study designed?
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Design Details

Primary Purpose: Supportive Care
Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: Single


Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Experimental: intervention<br>The intervention group received usual care plus the DASHNa-CC intervention. | Behavioral: DASHNa-CC<br>* The 8-week DASHNa-CC intervention incorporated Dietary Approach to Stop Hypertension (DASH) diet, sodium reduction with the food therapy of Traditional Chinese Medicine, and included an intervention manual, two sessions of classroom instruction delivered in Mandarin, and a 20-minute telephone follow-up.<br>Behavioral: usual care<br>* education booklet, encouragement of physician visit, use of public health resources if needed<br>|
| Active Comparator: control<br>The control group received usual care. | Behavioral: usual care<br>* education booklet, encouragement of physician visit, use of public health resources if needed<br>|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| blood pressure | systolic and diastolic blood pressure | 8 weeks post randomization | 

Secondary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| health related quality of life | used SF-36v2 | 8 weeks post randomization | 

 Terms related to the study
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Keywords Provided by Centre Hospitalier Valida
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hypertension, immigrant, dietary intervention, lifestyle modification