Changes in the Mean of and Variance in Psychological Disease Incidences before and during the COVID-19 Pandemic in the Korean Adult Population

Changes in the Epidemiology of Thoracic and Cardiovascular Diseases in Korea During the COVID-19 Pandemic: A Nationwide Analysis

Background/Objectives: There is limited evidence regarding the impact of the coronavirus disease 2019 (COVID-19) pandemic on the epidemiology of thoracic and cardiovascular diseases. This study aimed to investigate changes in medical visits for these conditions during the COVID-19 pandemic. Methods: We analyzed the entire Korean population (~50 million) for monthly medical visits for 15 common thoracic and cardiovascular conditions, including pneumothorax, large bullae, lung cancer, esophageal cancer, thymoma, empyema, mediastinitis, esophageal rupture, multiple rib fractures, hemothorax, rib mass, varicose vein, pectus excavatum, aortic dissection, aortic aneurysm, and valve disease from January 2019 to December 2021. Data were obtained from the Korean National Health Insurance Service using the International Classification of Disease (ICD)-10 codes. Variations in the mean monthly medical visits of 15 frequent thoracic and cardiovascular diseases before and during the COVID-19 pandemic were compared using the Mann-Whitney U test, while changes in variance were assessed using Levene's test. Results: The mean monthly number of medical visits for pneumothorax and large bullae significantly decreased during the COVID-19 pandemic compared to before the pandemic (by 10.1% and 12.8%; both p < 0.001). On the contrary, there was a significant increase in the mean monthly counts of medical visits for lung cancer, esophageal cancer, thymoma, and valve disease diagnosis (by 6.6%, 5.3%, 8.8%, and 5.0%, respectively; all p < 0.05). Conclusions: In Korea, the number of diagnosed cases of pneumothorax significantly decreased during the COVID-19 pandemic compared to before COVID-19, while diagnoses of thoracic cancers and valve disease increased.

A systematic review of studies on stress during the COVID-19 pandemic by visualizing their structure through COOC, VOS viewer, and Cite Space software

Background

The COVID-19 epidemic generated different forms of stress. From this period, there has been a remarkable increase in the quantity of studies on stress conducted by scholars. However, few used bibliometric analyses to focus on overall trends in the field.

Purpose

This study sought to understand the current status and trends in stress development during COVID-19, as well as the main research drives and themes in this field.

Methods

2719 publications from the Web of Science(WOS) core repository on stress during COVID-19 were analyzed by utilizing Co-Occurrence (COOC), VOS viewer, and Cite Space bibliometric software. The overall features of research on stress during COVID-19 were concluded by analyzing the quantity of publications, keywords, countries, and institutions.

Results

The results indicated that the United States had the largest number of publications and collaborated closely with other countries with each other. University of Toronto was the most prolific institution worldwide. Visualization and analysis demonstrated that the influence of stress during COVID-19 on the work, life, mental and spiritual dimensions is a hot research topic. Among other things, the frequency of each keyword in research on stress during COVID-19 increased from 2021 to 2022, and the researchers expanded their scope and study population; the range of subjects included children, nurses, and college students, as well as studies focusing on different types of stress, and emphasizing the handling of stress.

Conclusion

Our findings reveal that the heat of stress research during COVID-19 has declined, and the main research forces come from the United States and China. Additionally, subsequent research should concern more on coping methods with stress, while using more quantitative and qualitative studies in the future.

The impact of COVID-19 pandemic and lockdown on emergency psychiatry department admissions

This study aimed to explore the impact of the coronavirus disease 2019 pandemic and lockdown period measures on patients' visits to the psychiatric emergency department (PED) of a University Hospital in İstanbul. We compared the number and characteristics of patients during the initial lockdown with visits in the pre- and post-lockdown months. We also investigated the number of monthly PED visits and hospitalizations between March 11, 2020 and 2021 and compared it to the same period in 2019 and between March 2021 and 2022. PED visits in the initial lockdown period in our university increased by 109% compared to the prelockdown months in the previous year. Anxiety and depressive disorders were responsible for most of this increase. The decline in PED visits was 3.1% and 42% during the first and second year of the pandemic, respectively; however, among the major diagnostic categories, we found that the rates of anxiety, depressive disorders, and obsessive-compulsive disorder increased significantly in the first year, while psychotic disorders declined and bipolar disorders remained the same. In the second year, there was a trend toward prepandemic year ratios. These findings show that the pandemic affects PED admissions in different ways at different periods. These data may also help shaping the public policies necessary to meet the evolving needs in the field of mental health of society at different public crises in the future.

The Impact of the COVID-19 Pandemic on Inpatient Admissions for Psychotic and Affective Disorders: The Experience of a Large Psychiatric Teaching Hospital in Romania

The COVID-19 pandemic resulted in a global sanitary crisis and, in addition, elicited serious mental health consequences. The utilization of psychiatric hospital-based services acts as an indicator of public mental health. Therefore, this research sought to investigate differences in the numbers and characteristics of inpatient admissions for psychotic and affective disorders at the largest Romanian psychiatric hospital between the period of lockdown (16 March−15 May 2020) and another three corresponding periods: the same year in the pre-lockdown period (16 January−15 March 2020), the immediate post-lockdown period (16 May−15 July 2020), and two years later (16 March−15 May 2022). A retrospective analysis was performed. The study included a total of 6604 patients. Inpatient admissions decreased during lockdown in comparison with the pre-lockdown period and immediate post-lockdown period for psychotic disorders (p < 0.001 and p < 0.001, respectively) and affective disorders (p < 0.001 and p < 0.001, respectively). For both psychotic and affective disorders, a decrease in the age of the patients admitted during lockdown, as compared with the pre-lockdown period (p < 0.05 and p < 0.001, respectively), was observed. The length of the hospital stay for affective disorders was higher immediately post-lockdown in comparison with the lockdown period (p < 0.001). Collectively, the present findings provide a glimpse of the immediate and long-term consequences of the COVID-19 pandemic and lockdown measures on patients’ access to mental healthcare in the form of hospitalization, and these findings could provide the basis for the development of a different approach to times of crisis.