Table 3.
Measurement used for measuring primary and secondary outcomes
| Outcome measure | Measurement | Details of the measurement | Completed by |
| Primary outcomes | |||
| Direct costs | FIMA,43 FIMPsy44 | Assessment of psychiatric (FIMPsy) and general (FIMA) use of healthcare services and monetary evaluation using standardised unit costs40 41 | Interviewer |
| Indirect costs | RECOVER questionnaire | Assessment of indirect costs as productivity loss due to days off work/sick leave or early retirement | Interviewer |
| Disease remission and response | Health-49,45 CGI46 | Rating of general aspects of psychosocial health (Health-49) and severity of patient’s illness (CGI-S) | Study participant/interviewer |
| Symptoms and illness severity | Diagnosis-specific questionnaires | Rating of the severity of symptoms using several diagnosis-specific questionnaires | Interviewer |
| Functioning level | GAF47 | Rating of everyday functioning level | Interviewer |
| Health-related quality of life | EQ-5D-5L,48 SF-12,49 ReQoL50 | Rating of health-related quality of life and calculation of QALYs using the results of the EQ-5D-5L | Study participant |
| Secondary outcomes | |||
| Inpatient and day-care admissions, inpatient day-care days | Clinic documentation, FIMA,44 FIMPsy45 | Assessment of psychiatric (FIMPsy) and general (FIMA) use of healthcare services | Clinician/interviewer |
| Days with inability to work | RECOVER questionnaire | Assessment of days off work/on sick leave | Interviewer |
| Service disengagement rate | Clinical documentation | Patient interrupts contact with the treatment facility and cannot be reengaged again | Clinician |
| Waiting time until start of psychotherapy | RECOVER questionnaire | Assessment of active search for outpatient psychotherapeutic treatment after 6 months (t6) and 12 months (t12) | Study participant |
| Group and individual psychotherapy for patients with SMI | Clinic documentation, RECOVER questionnaire | Assessment of service use of specific interventions after 6 months (t6) and 12 months (t12) | Clinician/study participant |
| Use of digital therapy | RECOVER questionnaire | Assessment of service use of specific interventions after 6 months (t6) and 12 months (t12) | Study participant |
| Use of peer-support | FIMPsy43 (t0), RECOVER questionnaire | Assessment of service use of specific interventions after 6 months (t6) and 12 months (t12) | Study participant/interviewer |
CGI-S, Clinical Global Impressions - Severity scale; GAF, Global Assessment of Functioning; QALYs, quality-adjusted life years; SMI, severe mental illnesses.