Content chosen by the therapist, weekly guidance by a therapist.

Content chosen by the therapist, guidance upon request from the health care team.

Content chosen by participants themselves, weekly guidance by a therapist.

Content chosen by participants themselves, guidance upon request from the health care team.

The intervention consists of fifteen modules, each having a specific focus on a problem (e.g. comorbid worry alongside the depression) or containing a specific strategy or element (e.g. behavioral activation).

The fifteen modules are:

Introduction/Psychoeducation about depression, Behavioral activation 1, Behavioral activation 2, Cognitive restructuring, Acceptance, Psychoeducation about emotions, Anxiety and exposure, Comorbid social anxiety, Comorbid worrying and generalized anxiety, Comorbid panic disorder, Sleep problems, Perfectionism, Stress management, Relaxation, and Relapse prevention.

The first and last module are assigned to all participants. The rest is picked either by the participants themselves or by the therapist conducting the intake interview.

Measure of depressive symptoms. Possible range for the total sum: 0 to 63 (created by summing up the score from each item). Clinical ranges for minimal, mild, moderate and severe major depressive disorder are considered to be 0-13, 13-19, 20-28, and 29-63 points.

Measure of depressive symptoms. Possible range for the total sum: 0 to 27 (created by summing up the score from each item). Clinical cut-offs for mild, moderate, moderately severe and severe major depressive disorder are considered to be 5, 10, 15, and 20 points.

Measure of symptoms of generalised anxiety disorder (GAD). Seven items, the score is interpreted by summing up the score from each individual item. Higher scores indicate more severe problems with worry and generalised anxiety. The total sum ranges from 0 to 21 with cut-offs of 5, 10, and 15 representing mild, moderate and severe generalised anxiety.