Table 1.

Timeline of participant enrolment, interventions, assessments and patient records data collection

Time point	Enrolment	Baseline	Allocation	MJ3 training session*	4-month follow-up	12-month follow-up
Enrolment
Eligibility screen	X
Informed consent		X
Randomisation			X
Intervention
My Journey 3 (intervention group)
TAU (all participants)
Assessments
PANSS		X			X	X
Socio-demographic information		X			X	X
Clinical service use		X			X	X
Social Outcomes Index		X			X	X
Mental Health Confidence Scale		X			X	X
The Process of Recovery Questionnaire		X			X	X
WEMWBS		X			X	X
The DIALOG Scale		X			X	X
Service Engagement Scale (completed by EIP service clinicians)		X				X
Qualitative interviews (with participants in the intervention group and supporting clinicians)					X
Patient records data (from previous 12 months to time point)
Number of admissions to acute mental health services		X				X
Number of compulsory admissions to acute mental health services		X				X
Total number of days in acute care		X				X
Number of kept appointments with community mental health services		X				X
Number of missed appointments with community mental health services		X				X
Primary ICD-10 diagnosis		X				X
Most recent care cluster		X				X
Care Programme Approach status		X				X

*Participants in the intervention group only.

EIP, Early Intervention in Psychosis; ICD-10, Internal Classification of Diseases: 10th Revision; MJ3, My Journey 3; WEMWBS, Warwick-Edinburgh Mental Well-being Scale; PANSS, Positive and Negative Syndrome Scale; TAU, Treatment As Usual.