Clinical trial NCT02579746: Dietary Approach to Stop Hypertension With Sodium (Na) Reduction for Chinese Canadians
Official title: Dietary Approach to Stop Hypertension With Sodium (Na) Reduction for Chinese Canadians
Study type: INTERVENTIONAL
Overall status: COMPLETED
Phase: NA
Conditions: Hypertension
Keywords: hypertension
immigrant
dietary intervention
lifestyle modification
Lead sponsor: University of Toronto
Sponsor class: OTHER
First posted: 2015-10-20
Enrollment: 60
Sex: ALL
Minimum age (years): 45
Standard ages: ADULT
OLDER_ADULT
Accepts healthy volunteers: no
Allocation: RANDOMIZED
Intervention model: PARALLEL
Primary purpose: SUPPORTIVE_CARE

Brief summary: 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: 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.

Eligibility criteria: 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.

Primary outcomes:
measure: blood pressure
timeFrame: 8 weeks post randomization
Secondary outcomes:
measure: health related quality of life
timeFrame: 8 weeks post randomization
Other outcomes:
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