A new research study from The BMJ — formerly known as The British Medical Journal — relays that there are four main risk factors that tend to predict when a coronavirus victim is liable to suffer severe symptoms.

According to the study, the four factors that put coronavirus victims at a greater risk of experiencing severe symptoms include age, sex, weight, and any underlying illness.

Over the course of two and a half months, the study found that the median age of patients admitted to the hospital with coronavirus symptoms was 73.

Tellingly, the vast majority of patients who endured severe coronavirus symptoms had serious underlying health complications, with heart disease being the most common.

Another interesting chart helps illustrate the most common coronavirus symptoms experienced by patients who went to the hospital