Using Mobile Phone Short Message Service (SMS) Reminders to Enhance Appointment Attendance in DM Patients

The University of Hong Kong (HKU) logo

The University of Hong Kong (HKU)




Appointments and Schedules
Diabetes Mellitus, Type 2


Other: Mobile phone text message reminder

Study type


Funder types




Details and patient eligibility


A randomized controlled trial of patients with type 2 diabetes mellitus with multiple appointments into short message service group and control group. The attendance rate of these two groups of patients will be compared.

Full description

The main objective of this study is to evaluate the appointment attendance rate using SMS reminder of nurses and allied health appointments for diabetic patients, when compared to conventional telephone reminder and no reminder. We also aim at determine the factors associated with appointment attendance. Finally, we will also survey patients' acceptance and satisfaction to the SMS service. This is a single blind randomization study. It will be carried out in Ha Kwai Chung General Outpatient Clinic. The primary outcome of this study is to evaluate the attendance rate of each individual doctor, nurses and allied health clinic appointments for diabetic patients, as well as their overall attendance rates: Diabetes Complication Screening Clinic (OPAS DMCS/RDNA) Diabetes Nurse Intervention Clinic (OPAS DMIC/RDNI) DM nurse group (OPAS RDNG) Dietitian Counselling (OPAS DC/DG) Physiotherapy (OPAS PTC/PTG) Diabetes Doctor Session (OPAS RDR) Retino photo Assessment (OPAS RDO) Blood taking appointment (OPAS LABT) The secondary outcomes are: Acceptance Rate of SMS Reminder Vs Telephone Reminder Vs no reminder Factors associated with acceptance of SMS Personal Parameters: Age, sex, educational level, occupation, mobile phone models, Habit of using mobile phone service Disease Parameters: Number and types of comorbidity, disease control (by biochemical markers) Quality of Life (by SF-6D) Reported adverse effects of the reminder system Chang in biochemical markers (BMI, HbA1c, LDL-c level) 6-9 months later Subjects who agreed to participate in this study will first receive a survey on the acceptance of SMS service. For those agree to receive SMS reminder, they will be randomized to: an SMS remind them to come for scheduled clinic appointment 24-72 hours before, or usual care with no reminder / telephone reminder.


270 estimated patients




18+ years old


No Healthy Volunteers

Inclusion criteria

With diagnosis of type 2 diabetes

Have more than 1 clinic services appointment under RAMP-DM programme:

(e.g. blood taking, diabetic nurse individual counselling, group education, diabetic complication screening, retinal photo assessment, dietician counselling, etc)

Exclusion criteria

  • Cannot read or receive appointment schedule on mobile phone
  • Do not speak Cantonese/English or read Chinese/English
  • Mentally incapacitated
  • Pregnant Women

Trial design

Primary purpose

Health Services Research



Interventional model

Parallel Assignment


None (Open label)

270 participants in 2 patient groups

SMS group
Experimental group
receive a mobile phone text reminder for scheduled clinic appointment 24-72 hours before,
Other: Mobile phone text message reminder
Usual care group
No Intervention group
Usual care, either telephone reminder or no reminder

Trial contacts and locations



Central trial contact

Man Chi Dao, M.B.B.S.

Data sourced from

Clinical trials

Find clinical trialsTrials by location


© Copyright 2024 Veeva Systems