eTable 2. Instruments used to measure mental health.
| Instrument | Subscale | k |
| Hospital Anxiety and Depression Scale (HADS) | Full scale (distress) | 3 |
| Subscale “anxiety” | 13 | |
| Subscale “depression” | 18 | |
| Brief Symptom Inventory 18 (BSI-18) or Brief | Subscale “anxiety” | 4 |
| Symptom Checklist (BSCL) or Mini-Symptom Checklist (Mini-SCL) | Subscale “depression” | 4 |
| Patient Health Questionnaire (PHQ) | Depression module (PHQ-9) | 8 |
| Generalized Anxiety Disorder 7-item Scale (GAD-7) | 6 | |
| State-Trait Anxiety Inventory (STAI) | Subscale „state anxiety“ | 1 |
| Subscale „trait anxiety“ | 1 | |
| Full scale (anxiety) | 2 | |
| Center for Epidemiological Studies Depression Scale (CES-D) | 4 | |
| Beck Depression Inventory (BDI-II) | 3 | |
| CONOR Mental Health Index (CONOR-MHI) | 1 | |
| Rotterdam Symptom Checklist (RSC) | Subscale “psychological distress“ | 1 |
| Edinburgh Postnatal Depression Scale (EPDS) | 1 | |
| Geriatric Depression Scale (GDS) | 2 | |
| Self-Rating Anxiety Scale (SAS) | 2 | |
| State-Trait Operation Anxiety Inventory (STOA) | 1 | |
| SF-36 Health Survey | Sum score “mental health”“ | 6 |
| SF-12 Health Survey | Sum score “mental health” | 8 |
| SF-8 Health Survey | Sum score “mental health” | 1 |
| World Health Organization Quality of Life Assessment (WHOQOL-BREF) | Subscale “psychological health“ | 2 |
| European Organization for Research and Treatment of Cancer Quality of Life Questionnaire (EORTC QLQ-C30) | Subscale “emotional functioning“ | 2 |
| Functional Assessment of Cancer Therapy scale – bladder-cancer-specific module (FACT-BL) | Subscale ”emotional wellbeing“ | 1 |
k = number of associations