Objective To estimate the global prevalence of meeting the WHO guidelines for both aerobic
and muscle-strengthening activities (MSA) in populations aged≥ 5 years, and whenever …

The clinical course and outcome of COVID-19 are highly variable, ranging from
asymptomatic infections to severe disease and death. Understanding the risk factors of …

In medical research, when independent variables are categorical (ie, dividing groups),
statistical analysis is often required. This situation mostly occurs on randomized controlled …

Variables measured in medicine are usually continuous, such as blood pressure, serum
glucose, and drug dosage. There are statistical methods to confirm whether these variables …

Background: Some data suggest a higher incidence of diagnosis of autoimmune
inflammatory rheumatic diseases (AIRDs) among patients with a history of COVID-19 …

As mounting evidence suggests a higher incidence of adverse consequences, such as
disruption of the immune system, among patients with a history of COVID-19, we aimed to …

Importance Despite the COVID-19 pandemic's effect on daily life, limited research exists on
the prevalence and risk factors of suicidality and sadness among South Korean adolescents …

Objective To quantify the association between physical activity and risk of SARS-CoV-2
infection, COVID-19-associated hospitalisation, severe illness and death due to COVID-19 …

Objective: To estimate global, regional, and national incidences and mortality of the
coronavirus disease 2019 (COVID-19) in 237 countries and territories since the outbreak of …

Objective To determine the association between directly measured physical activity and
hospitalisation, intensive care unit (ICU) admission, ventilation and mortality rates in patients …