Effectiveness of a digital alcohol moderation intervention as an add-on to depression treatment for young adults: study protocol of a multicentre pragmatic randomized controlled trial

Table 2 Schedule of enrollment, allocation, interventions, and assessments

	Enrollment	Baseline	Allocation	Follow-up
	t_-1	t₀		t₁	t₂	t₃
Enrollment
Eligibility screen	X
Informed consent	X
Baseline assessment		X
Allocation			X
Interventions
TAU + BtB			X	X	X
TAU			X	X	X
Assessments
Socio-demographic characteristics		X
TLFB		X		X	X	X
AUDIT		X		X	X	X
CES-D		X		X	X	X
EQ-5D-5L		X		X	X	X
RAND-36		X		X	X	X
DMQ-R		X		X	X
MHI-5		X		X	X	X
ZUF-8				X
TIC-P		X		X	X	X
DERS-18		X			X
GAD-7		X			X
PAI-BOR		X			X
CTQ-SF		X
PCL-5		X			X
RES		X			X
Impact COVID-19		X		X	X	X

TAU + BtB Treatment as usual + Beating the Booze, TAU Treatment as usual, TLFB Timeline Followback, AUDIT Alcohol Use Disorder Identification Test, CES-D Center for Epidemiological Studies-Depression, EQ-5D-5L five-level and five-dimensional EuroQol, RAND-36 RAND-36 item Health Survey, DMQ-R Drinking Motives Questionnaire Revised, MHI-5 Mental Health Inventory, ZUF-8 Zufriedenheid questionnaire, TIC-P Trimbos/iMTA questionnaire on Costs associated with Psychiatric illness, DERS-18 Difficulties in Emotion Regulation Scale, GAD-7 Generalized Anxiety disorder, PAI-BOR Personality Assessment Inventory-Borderline Features scale, CTQ-SF Childhood Trauma Questionnaire – Short Form, PCL-5 Post-traumatic stress disorder Checklist for DSM-5, RES Resilience Evaluation Scale

ISSN: 1471-244X