Cost-effectiveness analysis of phone reminders for outpatient magnetic resonance imaging (MRI) appointments in Singapore.

Introduction: Due to long wait times, rising demand and limited resources for Magnetic Resonance Imaging (MRI) services, phone call reminders were implemented as an intervention to increase scanner utilisation and improve non-attendance at the radiology department in Changi General Hospital, Singapore.

Aim: This study aims to evaluate the impact of phone reminders on outpatient MRI non-attendance rate as well as the operational efficiency and savings of this intervention through cost-effectiveness analysis.

Methods: MRI outpatient records from January to December 2020 (pre-intervention period) and January to December 2021 (post-intervention period) were retrospectively obtained from the hospital systems.