ALB and respiratory failure: As determined using univariate analysis, the patients’ outcomes in the hospital were worse when they had peptic ulcer disease; confusion; dyspnea; shock; respiratory failure; SBP ≤ 100 mmHg; an altered mental state according to the Glasgow Coma Scale; an RR ≥ 22; a qSOFA score of ≥2; higher BUN/CRP and a lower albumin level on day 1 of hospitalization; a higher PMN percentage/ANC/potassium/CRP/bilirubin and lower albumin level one week after admission; a shorter ampicillin use duration; a longer treatment delay for ampicillin therapy; and combined E. coli bacteremia.