Heterogeneity in depressive and anxiety symptoms and loneliness during the COVID-19 pandemic:Results from three Dutch psychiatric case-control cohorts from April 2020 to February 2022

Objective: While research found heterogeneous changes in mental health during the COVID-19 pandemic, less is known about the long-term changes in mental health in psychiatric groups. Therefore, we applied a data-driven method to detect sub-groups with distinct trajectories across two years into the pandemic in psychiatric groups, and described their differences in socio-demographic and clinical characteristics. Method: We conducted sixteen rounds of questionnaires between April 2020 and February 2022 among participants (n = 1722) of three psychiatric case?control cohorts that started in the 20... Mehr ...