Table 1.
Measures and assessment time points.
| Measures | T0 | T1 | T2 | T3 |
|---|---|---|---|---|
| Primary outcome | ||||
| Depression severity, PHQ-9 | x | x | xa | |
| Secondary outcomes/process measures | ||||
| Guideline-based depression care (e.g. depression diagnosis, psychotherapy, medication) | x | |||
| Depression-related help-seeking behaviour (e.g. seeking information about depression) | x | |||
| Anxiety severity, GAD-7 | x | x | ||
| Somatic symptom severity, SSS-8 | x | x | ||
| Health-related quality of life, EQ-5D-5L | x | x | ||
| Healthcare utilisation and productivity loss, CSSRI | x | x | ||
| Intervention acceptance, USE | x | x | ||
| Illness beliefs, Brief IPQ | x | x | x | |
| Intervention adherence | x | xb | ||
| Critical life events | xb | |||
| Depression diagnosis, SCID | xb | xb | ||
| Adverse events | xb | |||
| Website use | x | x | x | x |
| Characteristics | ||||
| Sociodemographic data | x | |||
| Medical data | x | |||
| Risk factors for depression onset | x |
Note. T0 = before randomisation; T1 = 2 days after randomisation; T2 = 1-month follow-up, T3 = 6-months follow-up; PHQ-9 = Patient Health Questionnaire-9; CSSRI = Client Sociodemographic and Service Receipt Inventory; EQ-5D-5L = EuroQol-5D 5-L; GAD-7 = Generalized Anxiety Disorder-7; SSS-8 = Somatic Symptom Scale-8; SCID = Structured Clinical Interview for DSM-5 Disorders; USE = Usefulness Scale for Patient Information Material; Brief IPQ = Brief Illness Perception Questionnaire.
a
Primary outcome.
b
Measures assessed via telephone interview.