Among COVID-19 patients, thromboembolic events were less likely to occur among patients on low-dose acetylsalicylic acid alone, but both acetylsalicylic acid and enoxaparin, and enoxaparin alone were more effective in reducing these events.

Use of acetylsalicylic acid alone and enoxaparin alone was not associated with a reduction in mechanical ventilation needs.

Concomitant use of low-dose aspirin and enoxaparin was associated with reduced mechanical ventilation.