[Low-Intensity Interventions to Reduce Depressive Symptoms before Outpatient Psychotherapy - A Systematic Literature Review]. / Niedrigintensive Interventionen zur Reduktion depressiver Symptome vor Beginn einer ambulanten Psychotherapie.

Psychotherapeutic resources are limited, leading to prolonged waiting periods prior to outpatient psychotherapy. Low-intensity interventions have the potential to bridge such treatment gaps. This systematic review aims to identify interventions targeting depressive symptoms implemented prior to outpatient psychotherapy, and to assess their effectiveness and acceptance. 22 studies were identified. Interventions were classified as active waiting, self-help, guided self-help, brief single-strand interventions, and low-intensity psychotherapy. Evidence of intervention effectiveness is limited; intervention acceptance varies between interventions. The resulting classification illustrates a range of innovative interventions which can be implemented into routine care depending on existing resources and preferences. Different models for the provision of low-intensity interventions are discussed.