Participants with Borderline pathology (≥ 3 DSM-IV-criteria) receiving an inpatient Dialectical Behavior Therapy (DBT) program completed a quality assurance questionnaire set assessing demographic information and pretreatment psychopathology during the days of their inpatient stay. Beyond that, changes of therapists were documented.

Inclusion Criteria:

• three or more criteria for BPD as defined by DSM-5 (Borderline Personality characteristics; BPC)

Exclusion Criteria:

• inability to contract and consent,
• other severe mental disorders (bipolar disorder, acute psychosis),
• current alcohol,
• illicit or not prescribed drug use,
• simultaneous participation in other treatment studies,
• pregnancy or breastfeeding,
• an inability to negotiate a non-suicide agreement,
• ongoing traumatic contact with the perpetrator, and
• a Body Mass Index < 16.5.

For this study, all patients aged from 18 to 65, discharged from our personality disorder inpatient unit between January 2019 and December 2021, and fulfilling three or more criteria for BPD as defined by DSM-IV (Borderline Personality characteristics; BPC) were considered (n = 44).