Duration from onset of symptoms to radiological confirmation of pneumonia, days5 (3–9)5 (3–7)Duration from onset of symptoms to ICU admission, days9 (6–12)11 (7–14)Heart rate, beats per min89 (20)89 (15)Systolic blood pressure, mm Hg133 (20)140 (21)

Heart rate, respiratory rate, and mean arterial pressure did not differ between patients who received ICU care and patients who did not receive ICU care. These measures were recorded on day of hospital admission for all patients, then divided into those who were later admitted to the ICU or not.