From the study: “The researchers found aspirin use was associated with a 44% reduction in the risk of being put on a mechanical ventilator, a 43% decrease in the risk of ICU admission and — most importantly — a 47% decrease in the risk of dying in the hospital compared to those who were not taking aspirin. The patients in the aspirin group did not experience a significant increase in adverse events such as major bleeding while hospitalized.”
While daily aspirin use can increase the risk of major bleeding or something like peptic ulcer disease, doctors often recommend a daily low-dose aspirin when someone has had a heart attack or a stroke caused by a blood clot in order to prevent future clots.