Table 2

Study instruments and data collection time points

Outcome/variable	Study measure	Baseline	10 days post-HSCT	60 days post-HSCT	100 days post-HSCT
Quality of life	CareGiver Oncology Quality of Life questionnaire	X	X	X	X
Caregiving burden	Caregiver Reaction Assessment	X	X	X	X
Anxiety symptoms	Hospital Anxiety and Depression Scale	X	X	X	X
Depression symptoms	Hospital Anxiety and Depression Scale	X	X	X	X
Symptoms of post-traumatic stress	Post-Traumatic Stress Disorder Checklist	X	X	X	X
Self-efficacy	Cancer Self-Efficacy Scale-transplant	X	X	X	X
Coping skills	Measure of Current Status Part A	X	X	X	X
Usability of the BMT-CARE app	System Usability Scale*			X
Use of supportive care services	Self-reported utilisation of mental health services			X

*This measure is administered only to participants randomised to the intervention arm.
HSCT, haematopoietic stem cell transplantation.