Cognitive behavioural therapy for psychopathology in relatives of missing persons: study protocol for a pilot randomised controlled trial

Table 1 Overview of variables, concepts, measures, and time points

Variable	Concept	Measure	Time points
Primary outcome measures	Severity of PCBD symptoms	ICG	T0, T0.1, T1, FU1, FU2
Secondary outcome measures	Severity of PTSD symptoms	PCL-5	T0, T0.1, T1, FU1, FU2
	Severity of depressive symptoms	IDS-SR	T0, T0.1, T1, FU1, FU2
	Extent of mindfulness	SMQ	T0, T0.1, T1, FU1, FU2
Mediator	Severity of grief cognitions	GCQ	T0, T0.1, T1, FU1, FU2
	Severity of rumination	RRS	T0, T0.1, T1, FU1, FU2
	Severity of repetitive negative thinking	PTQ	T0, T0.1, T1, FU1, FU2
	Ability to be self-compassionate	SCS	T0, T0.1, T1, FU1, FU2
	Severity of intrusive memories	TMQ	T0, T0.1, T1, FU1, FU2
	Severity of avoidance behaviour	DAAPGQ	T0, T0.1, T1, FU1, FU2
Process of change session by session	Ability to be self-compassionate	SCS-SF	Start of each treatment session
	Severity of intrusive memories and images	Intrusive memories and images vas	Start of each treatment session
	Frequency of repetitive negative thinking	RNT vas	Start of each treatment session
Other variables	Sociodemographic information		T0
	Evaluation of the treatment and reason(s) for drop-out		T1

ICG Inventory of Complicated Grief, PCL-5 Posttraumatic Stress Disorder Checklist for DSM-5, IDS-SR Inventory of Depressive Symptomatology—Self-Report, SMQ Southampton Mindfulness Questionnaire, GCQ Grief Cognition Questionnaire, RRS Ruminative Response Scale, PTQ Perseverative Thinking Questionnaire, SCS Self-Compassion Scale, TMQ Trauma Memory Questionnaire, DAAPGQ Depressive and Anxious Avoidance in Prolonged Grief Questionnaire, SCS-SF Self-Compassion Scale – Short Form, RNT vas Repetitive Negative Thinking visual analogue scale, T0 baseline measure, T1 post-treatment assessment, T0.1 post-waiting period measure, FU1 follow-up measure 1, FU2 follow-up measure 2

ISSN: 2055-5784