Fig. 2.

Risk factors for the primary outcome and intensive care unit (ICU) admission. (A) Primary outcome. (B) ICU admission. (C) ICU admission not requiring invasive mechanical ventilation (IMV). (D) ICU admission requiring IMV. Age was regarded as a continuous variable. Separate analyses were performed to calculate odds ratio (ORs) of angiotensin-receptor blocker (ARB) and angiotensin-coverting enzyme inhibitor (ACEI). Values for ORs are plotted on a log scale. RAAS, renin-angiotensin-aldosterone system; CI, confidence interval; DM, diabetes mellitus; CVD, cardiovascular disease; CKD, chronic kidney disease; CPD, chronic pulmonary disease; CCI, Charlson Comorbidity Index.