Table 2.

Summary of the input features of the model.

Group and feature name		Feature description	Dimension
Medical records
	Diagnosis	Diagnosis codes from the health record	128
	Procedures	Procedure codes from the health record	128
	Meds	Medication codes from the health record	128
	Tests	Lab test codes from the health record	128
	Other	Other codes from the health record	128
Demographics
	Claim type	Inpatient or outpatient	2
	Age	Age at the event	1
	Gender	Male or female	2
Care site information
	Care site type	Type of site (public, corporate, or private)	21
	Care site specialization	Medical center, community hospital, district hospital, regional hospital, or clinic	5
	Care site rank	Rank of the care site	17
Record statistics
	Hospital stay	Duration of current hospital stay	1
	Total cost	Monetary cost of each of the five ICDa codes	5
	Total count	Counts of each of the five ICD codes	5
Historical information
	Past hospitalization duration	The number of days a person spends in the hospital within 3, 6, 12, and 24 months	4
	Past admission count	The number of times a person is admitted to the hospital within 3, 6, 12, and 24 months	4

^aICD: International Classification of Disease.