ABSTRACT
Nonattendance at outpatient appointment is a major problem particularly in public hospitals that leads to long waiting time and inefficient use of hospital recourses. The aim of this study was to evaluate the effectiveness of sending short message service [SMS] reminders to the mobile phones of patients scheduled for an outpatient appointment on nonattendance rate. A randomized controlled trial was conducted at three outpatient clinics [General Medicine [GM], Neurology [Neuro], Obstetrics and Gynecology [OB/GYN]. Eligible patients were randomly allocated to either receive SMS reminder message of their outpatient appointment [intervention group] or receive no reminder [control group]. The electronic database of the hospital was used to collect patient appointment information, mobile phone number, type of clinic and other patient characteristics. The primary outcome measure was nonattendance rate. Chi-square test and multivariate logistic regression were used to compare nonattendance rate between the two groups. A total of 1499 patients were entered in the two arms of the study between April 2011 and June 2011. These were divided as follows [GM= 502, Neuro =297, and OB/GYN =700]. The nonattendance rate was significantly lower in the reminder groups compared to the nonreminder groups in the GM and Neuro clinics [26.3% vs. 39.8% and 29.3% vs. 43.9%, respectively P