The impact of short message service text messages sent as appointment reminders to patients’ cell phones at outpatient clinics in São Paulo, Brazil

https://doi.org/10.1016/j.ijmedinf.2009.09.001Get rights and content

Abstract

Objective

Nonattendance for appointments remains a challenge to health care managers and providers. The objective of this article is to present the results of a study on the impact of appointment reminders sent as short message service text messages to patients’ cell phones on nonattendance rates at outpatient clinics in São Paulo, Brazil.

Design

Data were collected on scheduled appointments in four medical clinics using Clinic Manager® or Clinic Web® systems that can send automated messages to patients. Data on appointment attendance were collected from these systems.

Measurements

More than 29,000 appointments were scheduled between July 1, 2007, and May 31, 2008, and for 7890 of them a text message reminder was sent to the patient's cell phone. The rates of nonattendance were compared between those who were sent and those who were not sent a text message as an appointment reminder.

Results

The nonattendance reduction rates for appointments at the four outpatient clinics studied were 0.82% (p = .590), 3.55% (p = .009), 5.75% (p = .022), and 14.49% (p = <.001).

Conclusion

The study results indicate that sending appointment reminders as text messages to patients’ cell phones is an effective strategy to reduce nonattendance rates. When patients attend their appointments, the facility providing care and the patients receiving uninterrupted care benefit.

Introduction

There have been many advances in health care. The development of new drugs, the introduction of new techniques and technologies for medical diagnosis, and more widespread promotion of preventive measures such as vaccination are good examples of health care advances seen in recent decades. However, nonattendance for scheduled appointments remains a challenge to health care managers and providers because it can hamper patient treatment [1], [2].

Section snippets

Background

Nonattendance for scheduled appointments can result from many factors. Some authors [3], [4] report that the main reasons are forgetting, work obligations, the need to look after children, transportation difficulties, and appointment costs. Other authors [2] report that mixing up appointment dates, times, and locations is the main reason for missing appointments.

In their study, Lacy et al. [3] assessed the reasons patients gave for missing medical appointments. These authors claim that keeping

Methods

A private company, Katu Company, and the Department of Health Informatics at Federal University of São Paulo established a partnership to implement and maintain two electronic medical record systems, Clinic Manager® [12] and its related Web version, Clinic Web®. A compatible module was developed for sending reminders as SMS text messages to patients’ cell phones, with cost about US$ 10,000. It has been operating since June 2007. This module is based on open, low-cost technologies including

Results

Table 1 lists the number of SMS reminders sent for each of the five clinics during the study period, it is also shown the number of appointments of these outpatient clinics.

Clinic 4 was excluded from the analysis because it did not meet the criteria for attendance ascertainment defined earlier. The present analysis includes data from Clinics 1, 2, 3, and 5.

Fig. 3 shows the mean rates of nonattendance to general consultations and first visits during the period studied, regardless of whether an

Discussion

When an appointment is scheduled at a medical outpatient clinic, resources are allocated for seeing the patient at that time. Whether the patient attends an appointment or not, the costs of rent, provider salaries, and other resources must be covered. Patients missing appointments are more likely to discontinue their medical treatment and less likely to receive adequate and timely intervention. Therefore, strategies to reduce patient nonattendance at appointments are crucial to improve the

Conclusion

SMS appointment reminders sent to patients have proven to be an effective, easy strategy [2]. In the present study, data on thousands of appointments collected from four medical outpatient clinics in São Paulo were analyzed and supported the potential of SMS reminders to reduce nonattendance for appointments.

When a patient attends a scheduled appointment both the health care facility and the patient benefit. Besides using the appointment time to provide care to a patient, the facility avoids

Acknowledgments

We thank Katu Company and its collaborators for supporting the database to this research.

Summary points

What was already known on the topic:

  • We did not find any evidence on specialized literature concerning SMS text messages sent as appointment reminders to patients’ cell phones in developing countries;

  • There are some authors who show potential benefits on using SMS to improve attendance rates, although in restricted scenarios.

What this study added to our knowledge:

  • This study added positive,

References (13)

  • A.J. Mitchell et al.

    Why don’t patients attend their appointments? Maintaining engagement with psychiatric services

    Adv. Psychiatr. Treat.

    (2007)
  • M. Geraghty et al.

    Patient mobile telephone “text” reminder: a novel way to reduce non-attendance at the ENT out-patient clinic

    J. Laryngol. Otol.

    (2008)
  • N.L. Lacy et al.

    Why we don’t come: patient perceptions on non-show

    Ann. Fam. Med.

    (2004)
  • S.R. Downer et al.

    Use of SMS text messaging to improve outpatient attendance

    Med. J. Aust.

    (2005)
  • A. George et al.

    Non-attendance in general practice: a systematic review and its implications for access to primary health care

    Fam. Pract.

    (2003)
  • C.A. Stone et al.

    Reducing non-attendance at outpatient clinics

    J. R. Soc. Med.

    (1999)
There are more references available in the full text version of this article.

Cited by (111)

View all citing articles on Scopus
View full text