Table 5.

Summary of eICU tables used in our analysis

eICU
Table name	Description	Example variables
patient	Information on unique patients, hospitalizations, and ICU stays	Age, Sex Hospital/ward ID
vitalPeriodic vitalAperiodic	Vital signs measured through bedside monitors or invasively	Temperature End Tidal CO2
lab customLab	Laboratory tests	CPK troponin - I
medication infusionDrug intakeOutput	Active medication orders, the intake of drug through infusions, and intake/output of fluids	Morphine dosage Dialysis total
microLab	Microbiology cultures taken from patients	Culture site (wound) Organism
note nurseAssessment nurseCare nurseCharting	Documentation of physician/nurse assessment	Abdominal pain Psychological status Respiratory rate
pastHistory	Relevant past medical history	Transplant AIDS
physicalExam	Results of physical exam (structured)	Blood pressure Verbal score
respiratoryCare respiratoryCharting	Respiratory care data	Airway position Vent details
treatment	Structured data documenting specific, active treatments	Thrombolytics

Note: We used all structured tables that pertain to patient health.

AIDS: acquired immunodeficiency syndrome; CPK: creatine phosphokinase; ICU: intensive care unit; ID: unique identifier.