Introduction Increased age has been reported to be a factor for COVID-19 severe outcomes.
However, many studies do not consider the age dependency of comorbidities, which …

The linkage of individuals with obesity and COVID19 is controversial and lacks systematic
reviews. After a systematic search of the Chinese and English language literature on COVID …

Background Obesity affects the course of critical illnesses. We aimed to estimate the
association of obesity with the severity and mortality in coronavirus disease 2019 (COVID …

Aims To estimate the association of smoking status with rates of (i) infection,(ii)
hospitalization,(iii) disease severity and (iv) mortality from SARSCoV2/COVID19 disease …

Background This study applies an umbrella review approach to summarise the global
evidence on the risk of severe COVID-19 outcomes in patients with pre-existing health …

Objectives We conducted a systematic literature review and meta-analysis of observational
studies to investigate the association between diabetes, hypertension, body mass index …

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 …

Background and purpose The coronavirus disease 2019 (COVID-19) pandemic presents an
unprecedented health crisis to the entire world. As reported, the body mass index (BMI) may …

The coronavirus disease 2019 COVID-19 pandemic is rapidly spreading worldwide and is
becoming a major public health crisis. Increasing evidence demonstrates a strong …

Abstract Background At present, the Americas report the largest number of cases of COVID-
19 worldwide. In this region, Mexico is the third country with most deaths (20,781 total …