Plain English Summary
Background and study aims
More than 11 million people in England have type 2 diabetes or hypertension (high blood pressure). Taking medication as prescribed can significantly reduce risks, complications and early deaths associated with these conditions, but many people with these conditions do not take their medication as prescribed. GPs and nurses can support patients in taking their medication but they have limited time. There is therefore a need for low-cost solutions for helping patients to take their medication as prescribed. A promising approach is to use automated telephone interventions. Text and voice messages sent to patients’ mobile phones and landlines can deliver personalised and tailored support over a period of time. The aim of this study is to find out whether the use of text and voice messages is feasible and acceptable to patients and whether it helps patients take their medication as prescribed.
Who can participate?
Patients aged 18 or over with type 2 diabetes or high blood pressure from six general practices
What does the study involve?
Participants are randomly allocated to the intervention or control group. The intervention group receive usual care plus interactive text and voice messages to promote medication adherence. The comparator group receive usual care only. The study lasts for 3 months and both groups’ medication adherence, blood pressure and blood sugar levels are measured at the end of the study.
What are the possible benefits and risks of participating?
If the results are encouraging, the text and voice messages will be tested in a large study. The study may benefit patients by supporting them to take their medications as prescribed and improving their health. This would also benefit the NHS by reducing hospital admissions, additional consultations, referrals and investigations, and medicine wastage. The risk of side effects is generally very low.
Where is the study run from?
University of Cambridge (UK)
When is the study starting and how long is it expected to run for?
December 2014 to December 2018
Who is funding the study?
National Institute for Health Research (UK)
Who is the main contact?
Dr Katerina Kassavou
Dr Katerina Kassavou
University of Cambridge
Department of Public Health and Primary Care
+44 (0)1223 330 456
Feasibility of MAPS (Medication Adherence for Patient Support): a highly tailored text and voice messaging intervention to support medication adherence among patients with type 2 diabetes and/or hypertension in primary care
This study aims to develop and assess the feasibility of MAPS: a highly tailored interactive text (SMS) and voice (IVR) intervention to promote medication adherence in patients with hypertension and/or type 2 diabetes, in primary care. The objectives are to develop the intervention, finalise the design of the study, and assess the feasibility, acceptability, cost and potential efficacy of the intervention.
East of England Essex Research Ethics Committee, 25/05/2017, ref: 17/EE/0203
Randomised; Both; Design type: Process of Care, Education or Self-Management, Psychological & Behavioural, Qualitative
Primary study design
Secondary study design
Randomised controlled trial
Patient information sheet
Not available in web format, please use the contact details to request a patient information sheet
Specialty: Primary Care, Primary sub-specialty: Diabetes; UKCRC code/ Disease: Cardiovascular/ Hypertensive diseases, Metabolic and Endocrine/ Diabetes mellitus
Participants will be randomised to the intervention (N=60) or comparator (n=40) group stratified by age, gender, practice and disease condition using a secure, computer random number generator:
1. The intervention group will receive usual care plus interactive text (SMS) and voice (IVR) message intervention aiming to promote medication adherence
2. The comparator group will receive usual care only
Using unequal group sizes will increase the information obtained about participants’ use of and response to the intervention. Randomisation will be conducted independently of the study co-ordination and intervention, with blinding of access to further participant information. If more than one member of the same household is included, they will be randomised to the same arm. Contamination between groups will be assessed by asking participants whether they know anyone else who is participating and which group they are in. Treatment duration will be 3 months for both intervention and comparator group. Follow up data will be collected at the end of the intervention (i.e., 3 months).
Primary outcome measure
1. Medication adherence:
1.1. Self-reported medication adherence, measured using two items at baseline and 3 months
1.2. Objectively measured medication adherence, collected by electronic monitoring devices (MEMS container caps that record the date and time of each opening) at 3 months
1.3. Objectively measured refill medication data, collected using records from practice or pharmacy dispensary at baseline and 3 months
2. Blood pressure, collected using an electronic sphygmomanometer or other blood pressure monitor devices available in each practice at 3 months
3. Glucose levels (HbA1c), collected using venous blood samples by practice nurse at 3 months
Secondary outcome measures
Quality of life, measured using the self-reported EQ-5D-5L at baseline and 3 months
Overall trial start date
Overall trial end date
Reason abandoned (if study stopped)
Participant inclusion criteria
1. Patients with primary diagnosis of T2DM and/or hypertension
2. Poorly controlled hypertension and/or T2DM, as indicated by clinical measures or gaps in ordering or filling repeat prescriptions
3. 18 years old and above
Target number of participants
Planned Sample Size: 142; UK Sample Size: 142
Participant exclusion criteria
Patients will be excluded if they:
1. Have a hearing impairment (hearing spectrum lower than 50Hz-20kHz) or a speaking impairment
2. Have a diagnosis of dementia, aphasia or other cognitive difficulties that could affect study participation
3. Have had a recent severe life-threatening event or are under treatment for another long-term condition (e.g. cancer)
4. Receive kidney dialysis
5. Are participating in another study
6. Plan to move from the area in the next 6 months
Recruitment start date
Recruitment end date
Countries of recruitment
Trial participating centre
Cambridgeshire and Peterborough CCG
National Institute for Health Research Central Commissioning Facility (CCF); Grant Codes: PB-PG-0215-36032
Funding Body Type
Funding Body Subtype
Results and Publications
Publication and dissemination plan
The protocol has been submitted and reviewed by the ethics committee and is available on request to Dr Katerina Kassavou (firstname.lastname@example.org). All additional documents (including study protocol, statistical analysis plan, other material) will be included in publications.
The results of this research project will be written up for publication in peer-reviewed journals. Findings will also be disseminated through national and international conference presentations and other scientific meetings. Participants will be sent a summary of the study findings. Information on the progress of the research and results of this research project will be available on the Behavioural Science Group webpage via the Primary Care Unit website at http://bit.ly/medicaladherence. Professor Stephen Sutton, Dr Katerina Kassavou and Professor Griffin will lead on writing up for publication and dissemination. Estimated date for publication of results is January 2019.
IPD sharing statement
The data sharing plans for the current study are unknown and will be made available at a later date.
Intention to publish date
Participant level data
To be made available at a later date
Basic results (scientific)
2019 results in: https://www.ncbi.nlm.nih.gov/pubmed/30613027