Table 1.

Questionnaires and assessments conducted at baseline and/or follow-up.

Questionnaires and assessments	Administration	Baseline	Follow-up
Demographic and personal information	Self-report	x
Mini International neuropsychiatric interview (41)	Semi-structured interview, Clinician report	x
Video-taped qualitative interview	Semi-structured interview	x
Beck depression inventory-II (42)	Self-report	x	x
Positive and negative affect scale (PANAS) (43)	Self-report	x	x
Patient health questionnaire (PHQ) (44)	Self-report	x	x
Suicide attempts (45)	Self-report	x
Childhood trauma questionnaire (46)	Self-report	x
Life events questionnaire (47)	Self-report	x
Interpersonal needs questionnaire [INQ-15; (48)]	Self-report	x	x
Beck scale for suicide ideation (BSS; German validated version; (49))	Self-report	x	x
Beck hopelessness scale (BHS; German validated version; (49))	Self-report	x	x
Acquired capability for suicide scale (ACSS-20; German validated, revised version from (50))	Self-report	x
Generalized self-efficacy scale (51)	Self-report	x	x
The trait hope scale (52)	Self-report	x	x
Suicidal crisis information	Information hospital and self-report		x
Research experience questionnaire	Self-report		x
App questionnaire			x