Table 1

Selection criteria

Inclusion	Prospective RCT or quasi-experimental cohort study
	Baseline assessment and post/follow-up assessment that exceeds at least 1 year
	Outpatient individual treatment
	Participants (≥18–65 Jahre)
	One treatment is LTPP (psychodynamic or -analytic long-term psychotherapy, psychoanalysis)
	Long-term is defined as ≥1 year or ≥50 sessions
	Standardised outcome measure of symptoms (global or specific) with at least one empirical proof of reliability
	Data on frequency of sessions are available
	Treatment is carried out by licensed psychotherapists
Exclusion	Focus on psychotic disorders
	Focus on organic disorders
	Single-case studies
	Serial case studies
	Qualitative studies
	Information on session frequency and therapy duration is not available
Outcomes	Primary:
	Standardised symptom assessment (global symptom level or disorder-specific)
	Secondary:
	Reliable change, no change and deterioration, calculated based on the primary outcome measure; serious adverse events, standardised assessments of personality/personality functioning, functional capacities or relationship pathology