global health. In the US, the Centers for Disease Control and Prevention (CDC) has listed 12
comorbidities within the first tier that increase with the risk of severe illness from COVID-19,
including the comorbidities that are common with increasing age (referred to as age-related
comorbidities) and other comorbidities. However, the current method compares a population
with and without a particular disease (or disorder), which may result in a bias in the results …