Written Behavioural Persuasion Technique Intervention for Hypertension Management

Study Overview
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Brief Summary
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This study aims to examine the feasibility and effectiveness of written behavioural persuasion techniques intervention to encourage treatment initiation and follow-up for hypertension management among the untreated hypertension population of the SEACO cohort.

Detailed Description
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Each household is given a unique identifier called house_id in the SEACO database. The randomisation will be computer-generated according to their house_id with a ratio of 1:1. During the house visit, participants' blood pressure will be taken three times, and the final reading will be the average of the second and third readings. Participants will be assessed based on the inclusion and exclusion criteria, i.e., age 35 years and above, blood pressure reading and reported not being diagnosed with or treated for hypertension. At the end of the house visit, all participants will receive a standard referral leaflet, and participants randomised to the intervention group will receive an additional written behavioural persuasion leaflet.

Official Title
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Effectiveness of Written Behavioural Persuasion Technique Intervention for Hypertension Management Among The Untreated Hypertension Population of The Community Observatory in Segamat, Johor: a 2-arm Randomised Controlled Trial Within Cohort

Conditions
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Hypertension, Behavior and Behavior Mechanisms

Intervention / Treatment
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* Behavioral: Written persuasive leaflet
* Behavioral: Standard referral leaflet


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: Age 35 and above Systolic blood pressure equal to or more than 140 mmHg Diastolic blood pressure equal to or more than 90 mmHg reported not being diagnosed with hypertension OR not being treated for hypertension Exclusion Criteria: Involve in other research projects decline to participate/reject

Ages Eligible for Study
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Minimum Age: 35 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: Other
Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: None (Open Label)


Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Experimental: Written persuasive leaflet<br>Participants will receive a written persuasive leaflet in addition to the standard referral leaflet. | Behavioral: Written persuasive leaflet<br>* Additional written behavioural persuasive technique leaflet and a standard referral leaflet provided at the end of the home-based health screening.<br>Behavioral: Standard referral leaflet<br>* Standard referral leaflet provided at the end of the home-based health screening.<br>|
| Sham Comparator: Standard referral leaflet<br>Participants will receive a standard referral leaflet. | Behavioral: Standard referral leaflet<br>* Standard referral leaflet provided at the end of the home-based health screening.<br>|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Number of participants who see a doctor because of high blood pressure at Week 4 | The number of participants who see a doctor because of high blood pressure within 4 | Follow-up after 4 weeks receiving the leaflet | 

Secondary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Time taken for clinic visit (week) | Time taken (week) for participants to go see a doctor because of high blood pressure after receiving the leaflet | Follow-up after 4 weeks of receiving the leaflet | 
| Blood pressure status during clinic visit | Participants' self-reported blood pressure status during the visit to the clinic/doctor (low, normal, high) | Follow-up after 4 weeks of receiving the leaflet | 
| 12-item Health Literacy score | 12-item Health Literacy is a validated, self-reported instrument used to measure health literacy (HL). The index value for HL is obtained where 0 represents the lowest HL and 50 the highest HL | Follow-up after 4 weeks of receiving the leaflet |