Short Message Service reminders reduce outpatient colonoscopy nonattendance rate: A randomized controlled study.

Background And Aim: Nonattendance of outpatient colonoscopy leads to inefficient use of health-care resources. We aimed to study the effectiveness of using Short Message Service (SMS) reminder prior in patients scheduled for outpatient colonoscopy on their nonattendance rate.

Methods: Patients who scheduled for an outpatient colonoscopy and had access of SMS were recruited from three clinics in Hong Kong.