Table 1.

Finalised list of attributes from the expert panel discussion

Attributes	Levels	Description
Modality	Automated text message	Type of reminder that will be received
	E-mail
	Automated/robot phone call
	Phone call with a person
	Postal letter
Timing	Less than 3 days before the appointment	When the reminder is received
	1 week before the appointment
	1 month before the appointment
Content	Basic details (clinic location information (address, directions and map) + time and date)	Information provided in the reminder
	Basic details + clinician name
	Basic details + appointment cost
Interactivity	Ability to cancel or modify the appointment	What can be done with the reminder
	No ability to cancel or modify the appointment