The COX proportional hazard model showed no significant association
between ACEI/ARB use and the time to ICU admission in both the
unadjusted (HR=0.9, 95% CI [0.8, 1.1], p-value= 0.5) and adjusted
models (HR= 0.9, 95% CI[0.79, 1.11], p-value= 0.5) (Table 5).
Table 5: Adjusted proportional hazard model illustrating the association
between the use of ACEI/ARB ICU admission rates.