Table 2.
GermanIMPACT outcome measures, instruments, and times of assessment
| Month | 0 | 6 | 12* | ||
| Time of assessment | t0 | t1 | t2 | ||
| Primary outcome | |||||
| Depression (PHQ-9) | X | X | X | ||
| Secondary outcomes | |||||
| Sociodemographic data | X | partial | partial | ||
| Comorbidity (CDI, modified**) | X | – | X | ||
| Anxiety (GAD-7) | X | X | X | ||
| Pain (CPG, modified**) | X | X | X | ||
| Resource utilization (FIMA) | X | X | X | ||
| Preference-based quality of life (EQ-5D) | X | X | X | ||
| Resilience (RS-13) | X | X | X | ||
| Depression-related behavior (Ludman et al. [44], modified**) | X | X | X | ||
| Problem-solving skills | X | X | X | ||
| Current life situation | X | X | X | ||
| Intervention group only | |||||
| Evaluation of intervention | – | – | X | ||
| Therapy preference questionnaire | X | – | – | ||
| Depression (PHQ-9) - additional measures | – | each session | – | each session | – |
*Primary time of assessment (t2) after intervention.
**Linguistic and culture-specific modifications
Abbreviations: PHQ-9, the Patient Health Questionnaire; CDI, the Comorbidity Disease Index; GAD-7, the seven-item Generalized Anxiety Disorder Scale; CPG, the Graded Chronic Pain Scale; FIMA, Fragebogen zur Inanspruchnahme medizinischer und nicht-medizinischer Versorgungsleistungen im Alter; EQ-5D, EuroQol Group; RS-13, the 13-item Resilience Scale.