Table 1.
Measurement characteristics for clinical and psychosocial vulnerabilities
| Variable | |||
|---|---|---|---|
| Vulnerabilities | Type | Range | Time points of assessment |
| Severity of depression symptoms (IDS-SR) | Sum-score (28 items)a | 0–84 | Baseline, 1-, 2-, 4-, 6-, 9-year follow-up |
| Severity of anxiety symptoms (BAI) | Sum-score (21 items)a | 0–63 | Baseline, 1-, 2-, 4-, 6-, 9-year follow-up |
| Disease burden (Life-chart) | % time spent with depression/anxiety symptoms in past 14 years | 0–100 | Baseline, 2-, 4-, 6-, 9-year follow-up |
| Age of onset of depression/anxiety (CIDI, version 2.1) | Earliest age of onset (in years) | N/A | Baseline, 2-, 4-, 6-, 9-year follow-up |
| Neuroticism (NEO-FFI) | Subdomain sum-score (12 items)a | 12–60 | Baseline, 2-, 4-year follow-up |
| Introversion (NEO-FFI) | Subdomain sum-score (12 items)a | 12–60 | Baseline, 2-, 4-year follow-up |
| External locus of control (Mastery Scale) | Sum-score (5 items)a | 5–25 | Baseline, 2-, 4-, 6-, 9-year follow-up |
| Hopelessness (LEIDS-R) | Subscale sum-score (5 items)a | 4–20 | Baseline, 2-, 4-, 6-, 9-year follow-up |
| Rumination (LEIDS-R) | Subscale sum-score (6 items)a | 4–24 | Baseline, 2-, 4-, 6-, 9-year follow-up |
| Anxiety sensitivity (ASI) | Sum-score (16 items)a | 0–64 | Baseline, 2-, 9-year follow-up |
| Childhood trauma (CTI) | Sum-score of number and frequency of events | 0–8 | Baseline |
| Recentb negative life events (LTE) | Total number of past 3-year events (12 items) | 0–12 | 9-year follow-up |
IDS-SR, Inventory of Depressive Symptomatology-Self Report; BAI, Beck Anxiety Inventory; CIDI, Composite International Diagnostic Interview; NEO-FFI, NEO Five Factor Inventory; LEIDS-R, Leiden Index of Depression Sensitivity-Revised; ASI, Anxiety Sensitivity Index; CTI, Childhood Trauma Interview; LTE, List of Threatening Experiences.
a
(Subscale/subdomain) sum-scores were averaged over all available NESDA waves.
b
Past 3-year.