Table 1 Variables summary

Demographic characteristics

age^a,b, gender, ethnicity, BMI^a, admission type^a,b

Vital signs

max HR^b, min HR^a,b, max RR^a, min RR^a, max temperature^b, min temperature^a, max SBP^b, min SBP^a,b, max DBP, min DBP, max MAP, min MAP^a,c, max SpO2, min SpO2^a

Consciousness

min GCS^a,b,c

Laboratory tests

max pH^a, min pH^a, max PaO2, min PaO2^a, max PaCO2^a, min PaCO2, max bicarbonate, min bicarbonate^b, min PaO2/FiO2^a,b,c, max WBC^a,b, min WBC^a,b, max hematocrit, min hematocrit, max platelet, min platelet^a,c, max hemoglobin^a, min hemoglobin, max bilirubin^a,b,c, min bilirubin^a, max albumin^a, min albumin^a, max creatinine^a,c, min creatinine, max BUN^b, min BUN^a, max sodium^b, min sodium^a,b, max potassium^b, min potassium^a,b, max glucose, min glucose, max lactate^a, min lactate^a, max PT^a, min PT

Comorbidities

AIDS^a,b, hematological tumor^a,b, metastatic cancer^a,b

Pivotal treatments

Mechanical ventilation^a,b,c (including invasive and noninvasive ventilation), Renal replacement therapy^a, Max dose of vasoactive drugs (dopamine^c, dobutamine^c, epinephrine^c, norepinephrine^c)

Fluid balance

24 h Urine output^a,b,c