Cohort profile: The Corona Behavioural Unit COVID-19 cohort, a longitudinal mixed-methods study on COVID-19-related behaviour, well-being and policy support in the Netherlands

In response to the COVID-19 pandemic in the Netherlands, the National Institute of Public Health and the Environment (RIVM) established a longitudinal collaborative cohort study to examine adherence to COVID-19 behaviours, its psychosocial determinants, participant well-being, trust in the Dutch government, with additional attention for COVID-19 test and vaccination uptake. The cohort profile gives a comprehensive description of the cohort’s recruitment and its mixed-method design.