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Table 1 Study parameters and measurement instruments

From: Nudging socially isolated people towards well-being with the ‘Happiness Route’: design of a randomized controlled trial for the evaluation of a happiness-based intervention

Outcome measure

Instrument

Primary outcome measure

Emotional, social and psychological well-being

Mental Health Continuum – Short Form (MHC-SF)

Secondary outcome measures

Loneliness

Loneliness Scale

Depression

Center for Epidemiologic Studies Depression Scale (CES-D)

Consumption of care

Items from the Trimbos/iMTA questionnaire for Costs associated with Psychiatric Illness (TIC-P) and use of psychotropic drugs

Purpose in Life

Purpose in Life Scale

Resilience

Brief Resilience Scale

Social participation

Items from different validated survey studies, such as CBS-POLS and LISS

Health-related quality of life

Dutch version of the EuroQol (EQ-5D)

Moderating measures

Demographics of participants

Gender, age, education, marital status, number of children, cultural background, income, employment status

Demographics of counselors

Gender, age, occupational level, financial situation, cultural background

Work characteristics of counselors

Work experience, work conditions

Work engagement

Utrechtse Bevlogenheid Schaal (UBES)

Work satisfaction

Vragenlijst Beleving en Beoordeling van de Arbeid (VBBA), General Work Satisfaction

Adherence of counselors

Online logs