CCI	chronic critical illness
APACHE II	Acute Physiology and Chronic Health Evaluation II
NUTRIC	Nutrition Risk in the Critically Ill
AUROC	area under the receiver operating characteristic curve
ICU	intensive care unit
EHR	electronic health record
RICD	Russian Intensive Care Dataset
BMI	body mass index
SOFA	Sequential Organ Failure Assessment
FOUR	Full Outline of UnResponsiveness
GCS	Glasgow Coma Scale
CRS-R	Coma Recovery Scale—Revised
DRS	Disability Rating Scale
MV	mechanical ventilation
IQR	interquartile range
ROC	receiver operating characteristic
COPD	chronic obstructive pulmonary disease
CI	confidence interval