The network of psychosocial health in middle-aged and older adults during the first COVID-19 lockdown.

PURPOSE: Psychosocial health problems, such as social isolation, loneliness, depression and anxiety, have gained attention during the COVID-19 pandemic and are commonly co-occurring. We investigated the network of psychosocial health constructs during the COVID-19 pandemic. METHODS: This study included 4553 participants (mean age: 68.6 ± 11.2 years, 56% women) from the prospective Rotterdam Study, who filled out a questionnaire between April and July 2020, the time of the first COVID-19 wave in the Netherlands. Psychosocial health constructs included were depressive symptoms (Center for Epidemiological Studies Depression scale), anxiety symptoms (Hospital Anxiety and Depression scale), loneliness (University of California, Los Angeles loneliness scale), social connectedness (five items) and pandemic-related worry (five items). We estimated mixed graphical models to assess the network of items of these constructs and whether age and sex affected the network structure. RESULTS: Within the network of psychosocial constructs, a higher depressive symptoms score was particularly associated with items of loneliness and social connectedness, whereas overall anxiety was particularly associated with items of pandemic-related worry. Between people from different sex and age, the network structure significantly altered. CONCLUSION: This study demonstrates that within the same network of psychosocial health constructs, depressive symptom score is particularly associated with loneliness and social connectedness, whereas anxiety symptom score is associated with pandemic-related worry during the first COVID-19 lockdown. Our results support that psychosocial constructs should be considered in conjunction with one another in prevention and treatment efforts in clinical care, and that these efforts need to be tailored to specific demographic groups.

Trajectories of depression and anxiety during the COVID-19 pandemic in a population-based sample of middle-aged and older adults.

The COVID-19 pandemic and the related governmental restrictions have greatly impacted the lives of people worldwide and have been suggested to negatively impact mental health. We describe the trajectories of depressive and anxiety symptoms during the pandemic and their determinants in a large population-based sample of middle-aged and older adults. From April to June 2020, participants of the Rotterdam Study were asked to complete questionnaires including questions on depressive symptoms (Center of Epidemiological Studies Depression Scale, 10 item version) and anxiety symptoms (Hospital Anxiety and Depression Scale, anxiety subscale). We compared depressive and anxiety symptom scores to those before the pandemic and described its trajectories during the pandemic by demographic variables, chronic disease status and pre-pandemic clinically relevant depressive or anxiety symptoms. In total, 6241 participants responded to the questionnaires (mean age [standard deviation] 70.1 years [11.6]; 58% women). Participants more often reported clinically relevant depressive symptoms during than before the pandemic (19% vs. 12%, P < .001), which was similar for clinically relevant anxiety symptoms (17% vs. 12%, P < .001). During the pandemic, depressive symptoms persisted over time while anxiety symptoms improved. Depressive and anxiety symptoms were more common among women, persons living alone, with chronic diseases and with pre-pandemic clinically relevant symptoms, although the trajectories of these symptoms over time were broadly similar for the subgroups. Together, these results suggest that it is important to be aware of long-term depressive symptoms following the COVID-19 pandemic in the general population.

Design, implementation and initial findings of COVID-19 research in the Rotterdam Study: leveraging existing infrastructure for population-based investigations on an emerging disease.

The Rotterdam Study is an ongoing prospective, population-based cohort study that started in 1989 in the city of Rotterdam, the Netherlands. The study aims to unravel etiology, preclinical course, natural history and potential targets for intervention for chronic diseases in mid-life and late-life. It focuses on cardiovascular, endocrine, hepatic, neurological, ophthalmic, psychiatric, dermatological, otolaryngological, locomotor, and respiratory diseases. In response to the COVID-19 pandemic, a substudy was designed and embedded within the Rotterdam Study. On the 20th of April, 2020, all living non-institutionalized participants of the Rotterdam Study (n = 8732) were invited to participate in this sub-study by filling out a series of questionnaires administered over a period of 8 months. These questionnaires included questions on COVID-19 related symptoms and risk factors, characterization of lifestyle and mental health changes, and determination of health care seeking and health care avoiding behavior during the pandemic. As of May 2021, the questionnaire had been sent out repeatedly for a total of six times with an overall response rate of 76%. This article provides an overview of the rationale, design, and implementation of this sub-study nested within the Rotterdam Study. Finally, initial results on participant characteristics and prevalence of COVID-19 in this community-dwelling population are shown.