Use of Short Text Messages to Promote Medication Adherence in Hypertensive Patients

Study Overview
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Brief Summary
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OBJECTIVE: To evaluate the effect of intervention by sending short text messages with a reminder of the time of medication use, compared to sending educational messages, on adherence to drug treatment in patients with hypertension. METHODOLOGY: Prospective, randomized, controlled, double-blind, parallel group study that will be performed in patients with hypertension seen at a community pharmacy in Brazil. The following groups will be compared: a) intervention group 1: 70 hypertensive patients registered for access to medication associated with usual care, in addition to text messages via mobile phone with educational information b) intervention group 2: 70 hypertensive patients registered for access to medications that will additionally receive text messages at the times indicated in the prescription for use of each indicated medication, in addition to educational information. After the washout period, the groups will have the active interventions changed for an additional 90 days. The proportion of adherent and non-adherent patients with and without controlled BP in both groups will be compared after the periods of application of the different interventions.

Official Title
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Use of Short Text Messages to Promote Medication Adherence in Hypertensive Patients

Conditions
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Hypertension, Adherence, Treatment

Intervention / Treatment
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* Other: Educational short message texts
* Other: Adherence short message texts


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: hypertension diagnosis, age, availability of mobile phone with short message texts access and ability to read and access short message texts - Exclusion Criteria: visual, hearing or mental disabilities that disables receiving short message texts , being pregnant, recently delivered or breastfeeding -

Ages Eligible for Study
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Minimum Age: 18 Years
Maximum Age: 90 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: Health Services Research
Allocation: Randomized
Intervention Model: Crossover Assignment
Masking: Double


Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Experimental: Medication Time Short Messages<br>70 hypertensive patients registered for access to medications that will additionally receive text messages at the times indicated in the prescription for use of each indicated medication, in addition to educational information. | Other: Educational short message texts<br>* Educational messages for patient engagement<br>Other: Adherence short message texts<br>* Reminder messages of medication use time<br>|
| Experimental: Educational Short Messages<br>70 hypertensive patients registered for access to medications that will additionally receive text messages at the times indicated in the prescription for use of each indicated medication, in addition to educational information. | Other: Educational short message texts<br>* Educational messages for patient engagement<br>Other: Adherence short message texts<br>* Reminder messages of medication use time<br>|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Treatment adherence | Measurement of medication usage through Brief Medication Questionnaire: low to high adherence | Seven months (including one month of washout period) | 

Secondary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Blood pressure | Measurement of blood pressure | Seven months (including one month of washout period) | 

 Terms related to the study
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Keywords Provided by Centre Hospitalier Valida
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Hypertension, Primary Health Care