Table 1 Endpoints, potential predictors and measuring instruments
Measured quantity | Instrument and description | Time of assessment |
|---|---|---|
Ability to ‘understand’, ‘appreciate’, ‘reason’ and ‘express a choice’ as preconditions of capacity to consent | CAT-AD: adjusted version of the DCAT-PAD/MacCAT-T [20, 21] for PwAD | T1 & T2 |
Semi-structured interview | ||
Subjective task complexity | Subscale ‘post task: subjective task complexity’ [28] | T1 & T2 |
4-item-subscale | ||
Decisional conflicts | Subscale ‘uncertainty’ of the German version of the ‘Decisional Conflict Scale’ [29] | T1 & T2 |
3-item-subscale | ||
Anxiety in the decision-making situation | Single item described by LeBlanc et al. [30] | T1 & T2 |
Age, gender | T0 | |
Education | Single item based on German education system | T0 |
Severity of dementia | Mini-Mental Status Examination [31] | T0 |
Screening for cognitive abilities to detect cognitive impairment or dementia | ||
Severity of possible depression | Geriatric Depression Scale [32] | T0 |
Screening for depression in the elderly | ||
Perceived sense of belonging to home | Selection of items from Meaning of Home Questionnaire [26, 27] | T0 |
Adjusted for people with dementia & validated during the project | ||
Guided interview | ||
Need of autonomy for medical decisions | Single item described by Strull et al. [33] | T0 |
Health literacy | Single item described by Morris et al. [34] | T0 |