Table 1. Data description.

Data source	Categories	Features
Electronic Health Record	Demographic data	Age
		Sex
		Height
		Weight
		Body mass index
		ASA classification
	Comorbidities	Cardiovascular disease
		Respiratory disease
		Gastrointestinal disease
		Renal disease
		Endocrine disease
		Neurologic disease
Vital Recorder	Anesthetic drug†	Volume
		Plasma concentration
		Effect-site concentration
		Target concentration
	Vasoactive drug administration†	Vasopressor
		Vasodilator
	Noninvasive blood pressure†	Systolic
		Mean
		Diastolic
	Baseline blood pressure‡	Systolic
		Mean
		Diastolic
	Heart rate†	Heart rate
	Mechanical ventilation data†	Tidal volume
		Minute ventilation
		Respiratory rate
		Max positive airway pressure
	Hypotension†	Frequency
		Duration
		Average duration

The table notes the demographic information of the patient recorded in the electronic health record, derived features of the biomedical signal data, anesthetic drug derivative, hypotensive information, disease information in the pre-anesthetic history field, and drug information administered during anesthesia.

^†These features were observed from anesthetic induction to tracheal intubation.

^‡Baseline blood pressure was defined as the initial blood pressure in the operating room.