Table 1.

Statistics of electronic health record datasets

Dataset	MIMIC-III	UTP
Unique ICD-9 codes	4893	3144
Patients	7537	13 025
Patients’ visits	19 993	85 845
Average visits per patient	2.65	6.59
Maximum visits per patient	42	52
Average ICD-9 codes per visit	13.02	2.58
Maximum ICD-9 codes per visit	39	30

ICD-9: International Classification of Diseases–Ninth Revision; MIMIC-III: Medical Information Mart for Intensive Care-III; UTP: UT-Physicians.