Process and Outcome Evaluation of Different Psychotherapies

Patient Health Questionnaire-8 (PHQ-8)

8 items, Likert scale: 4-point; 0 (not at all) to 3 (nearly every day), Minimun value: 0, Maximum value: 24, Higher scores indicate more depressive symptoms, Score ≥ 10 indicate depression.

Time frame: through study completion, an average of 1 year

Generalizied Anxiety Disorder Scale-7 (GAD-7)

7 items, Likert scale: 4-point; 0 (not at all) to 3 (nearly every day), Minimun value: 0, Maximum value: 21, Higher scores indicate more anxiety symptoms, Score ≥ 10 indicate anxiety.

Time frame: through study completion, an average of 1 year

Patient Health Questionnaire-4 (PHQ-4)

4 items, Likert scale: 4-point; 0 (not at all) to 3 (nearly every day), Minimun value: 0, Maximum value: 12, Higher scores indicate more depressive and anxiety symptoms, Score ≥3 for first 2 questions indicates depression, Score ≥ 3 for last 2 questions indicates anxiety.

Time frame: through study completion, an average of 1 year

Positive Mental Health scale (PMH)

9 items, Likert skala: 4-point; 0 (do not agree) to 3 (agree), Minimun value: 0, Maximum value: 27, Higher scores indicate higher positive mental health.

Time frame: through study completion, an average of 1 year

Society for Psychotherapy Research Item on Mental Health

1 item, Likert scale: 5-point; 0 (very bad) to 4 (very good), Minimum value: 0, Maximum value: 4, Higher scores indicate better mental health.