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

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.

Study Overview

• Status: Completed
• Conditions: Hypertension
• Intervention / Treatment: Behavioral: DASHNa-CC; Behavioral: usual care

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.

• Study Type: Interventional
• Enrollment (Actual): 60
• Phase: Not Applicable

Participation Criteria

Eligibility Criteria

• Ages Eligible for Study: 45 years and older (Adult, Older Adult)
• Accepts Healthy Volunteers: No
• Genders Eligible for Study: All

Description

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.

Study Plan

How is the study designed?

Design Details

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

Number of Arms

2

Arms and Interventions

Participant Group / Arm	Intervention / Treatment
Experimental: intervention; The intervention group received usual care plus the DASHNa-CC intervention.	Behavioral: DASHNa-CC; 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.; Behavioral: usual care; education booklet, encouragement of physician visit, use of public health resources if needed
Active Comparator: control; The control group received usual care.	Behavioral: usual care; education booklet, encouragement of physician visit, use of public health resources if needed

What is the study measuring?

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

Collaborators and Investigators

• Sponsor: University of Toronto

Study record dates

Study Major Dates

• Study Start: August 1, 2014
• Primary Completion (Actual): December 1, 2014
• Study Completion (Actual): August 1, 2015

Study Registration Dates

• First Submitted: October 16, 2015
• First Submitted That Met QC Criteria: October 19, 2015
• First Posted (Estimate): October 20, 2015

Study Record Updates

• Last Update Posted (Estimate): October 20, 2015
• Last Update Submitted That Met QC Criteria: October 19, 2015
• Last Verified: October 1, 2015

More Information

Terms related to this study

• Keywords: hypertension; dietary intervention; lifestyle modification; immigrant
• Additional Relevant MeSH Terms: Cardiovascular Diseases; Vascular Diseases; Hypertension
• Other Study ID Numbers: UofT30496