Before revision:  Patients  who were taking   -AR antagonists for other conditions had lower probability of needing invasive mechanical ventilationand dying in the hospital compared to non-users , both in ARDS (adjusted OR = 0.59 , 95\% CI 0.34-0.95 , p = 0.021)and in pneumonia (adjusted OR = 0.77, 95\% CI 0.62-0.94, p = 0.007) .
After revision:  Patients who were taking  -AR antagonists for other conditions had a 35\% reduced risk of requiring ventilation, and a 56\% reduced risk of ventilation and death, compared to non-users , both in ARDS (adjusted OR = 0.59 , 95\% CI 0.34-0.95 , p = 0.021)and in pneumonia (adjusted OR = 0.77, 95\% CI 0.62-0.94, p = 0.007) .