Table 1.

Schedule of assessments.

Retrospective assessments (in situ and online)	Ambulatory phase
Sociodemographic and hair-related data Trauma and PTSD severity Health and well-being Coping strategies and efficacy After Ambulatory Phase: Study feedback	A	App Users with PTSD	Manual Usage Diary Preferred tools, logbooks Number of uses per tool
	B	EMA Responders with PTSD	Experiencing of PTSD symptoms Applied coping strategies and efficacy
	C	Controls with PTSD	-
	D	Non-Traumatized Healthy Control	Aversive emotions Applied coping strategies and efficacy

Sociodemographic and hair-related data: Self-developed questionnaires; Trauma and PTSD severity: Posttraumatic Stress Disorder Checklist for DSM-5 (PCL-5) (Blevins, Weathers, Davis, Witte, & Domino, 2015), Posttraumatic Cognitions Inventory (PTCI) (Foa, Ehlers, Clark, Tolin, & Orsillo, 1999), Questionnaire on Dissociative Symptoms (FDS-20) (Spitzer, Mestel, Klingelhofer, Gansicke, & Freyberger, 2004) and Childhood Trauma Questionnaire (CTQ); Health and well-being: Short Form-8 Health Survey (SF-8) (Beierlein, Morfeld, Bergelt, Bullinger, & Brähler, 2012), Patient Health Questionnaire (PHQ-D) (Gräfe, Zipfel, Herzog, & Löwe, 2004); Coping strategies and efficacy: BriefCOPE (Carver, 1997), Difficulties in Emotion Regulation Scale (DERS) (Gratz & Roemer, 2004); Manual App Usage Diary: Self-developed tool; Experiencing of PTSD symptoms: Primary Care PTSD Screen for DSM-V (PC-PTSD-V) (Prins et al., 2016) Applied coping strategies and efficacy: BriefCOPE (Carver, 1997); Aversive emotions: Positive and Negative Affect Schedule (PANAS) (Watson, Clark, & Tellegen, 1988); Study feedback: Self-developed questionnaires (attrition, compliance, usability of the applications, use of therapeutic or self-help offers)