An ensemble model for predicting dispositions of emergency department patients

Kuo, Kuang-Ming; Lin, Yih-Lon; Chang, Chao Sheng; Kuo, Tin Ju

doi:10.1186/s12911-024-02503-5

BMC Medical Informatics and Decision Making

Table 5 Characteristics of categorical structured features

From: An ensemble model for predicting dispositions of emergency department patients

	2018 (N = 40,667)			2019 (N = 39,406)			Total (N = 80,073)
Attribute	Value	Frequency	%	Value	Frequency	%	Value	Frequency	%
Gender	Female	18,765	46.14	Female	18,668	47.37	Female	37,433	46.75
Gender	Male	21,902	53.86	Male	20,738	52.63	Male	42,640	53.25
Glasgow coma scale	3	247	0.61	3	234	0.59	3	481	0.60
	4	101	0.25	4	77	0.20	4	178	0.22
	5	124	0.30	5	127	0.32	5	251	0.31
	6	170	0.42	6	133	0.34	6	303	0.38
	7	194	0.48	7	166	0.42	7	360	0.45
	8	229	0.56	8	208	0.53	8	437	0.55
	9	280	0.69	9	273	0.69	9	553	0.69
	10	541	1.33	10	462	1.17	10	1,003	1.25
	11	278	0.68	11	235	0.60	11	513	0.64
	12	247	0.61	12	212	0.54	12	459	0.57
	13	279	0.69	13	290	0.74	13	569	0.71
	14	604	1.49	14	606	1.54	14	1,210	1.51
	15	37,373	91.90	15	36,383	92.33	15	73,756	92.11
Top 10 ICD-10-CM	R	10,427	25.64	R	9,318	23.65	R	19,745	24.66
	S	7,657	18.83	S	7,544	19.14	S	15,201	18.98
	K	3,812	9.37	K	3,860	9.80	K	7,672	9.58
	J	3,600	8.85	J	3,729	9.46	J	7,329	9.15
	N	2,551	6.27	N	2,786	7.07	N	5,337	6.67
	I	2,315	5.69	I	2,228	5.65	I	4,543	5.67
	M	2,056	5.06	M	1,924	4.88	M	3,980	4.97
	T	1,811	4.45	T	1,652	4.19	T	3,463	4.32
	L	1,466	3.60	L	1,534	3.89	L	3,000	3.75
	C	744	1.83	A	712	1.81	A	1,409	1.76
Taiwan triage acuity scale	Level 1	2,671	6.57	Level 1	2,443	6.20	Level 1	5,114	6.39
	Level 2	4,672	11.49	Level 2	4,176	10.60	Level 2	8,848	11.05
	Level 3	29,585	72.75	Level 3	29,522	74.92	Level 3	59,107	73.82
	Level 4	3,700	9.10	Level 4	3,241	8.22	Level 4	6,941	8.67
	Level 5	39	0.10	Level 5	24	0.06	Level 5	63	0.08
Top 10 triage code (Note 3)	A03	7,627	18.75	A03	7,080	17.97	A03	14,707	18.37
	A04	5,347	13.15	A13	5,330	13.53	A04	10,590	13.23
	A13	5,091	12.52	A04	5,243	13.31	A13	10,421	13.01
	T12	4,157	10.22	T12	4,070	10.33	T12	8,227	10.27
	A01	3,247	7.98	A02	2,998	7.61	A02	6,216	7.76
	A02	3,218	7.91	A01	2,952	7.49	A01	6,199	7.74
	A06	2,155	5.30	A06	2,151	5.46	A06	4,306	5.38
	A05	1,585	3.90	A09	1,580	4.01	A09	3,098	3.87
	A07	1,575	3.87	A07	1,513	3.84	A07	3,088	3.86
	A09	1,518	3.73	A05	1,472	3.74	A05	3,057	3.82
Disposition	Admission	16,687	41.03	Admission	15,646	39.70	Admission	32,333	40.38
	Expire	83	0.20	Expire	81	0.21	Expire	164	0.20
	Discharge	23,897	58.76	Discharge	23,679	60.09	Discharge	47,576	59.42

Notes 1.ICD-10-CM initials: A: Certain infectious and parasitic diseases, C: Diseases of the blood and blood-forming organs and certain disorders involving the immune mechanism, I: Diseases of the circulatory system, J: Diseases of the respiratory system, K: Diseases of the digestive system, L: Diseases of the skin and subcutaneous tissue, M: Diseases of the musculoskeletal system and connective tissue, N: Diseases of the genitourinary system, R: Symptoms, signs, and abnormal clinical and laboratory findings, not elsewhere classified, S: Injury, poisoning, and certain other consequences of external cause, T: External causes of morbidity
2. Triage code: A01: Respiratory system, A02: Cardiovascular system, A03: Gastrointestinal system, A04: Nervous system, A05: Skeletal system, A06: Urinary system, A07: Ear, nose, and throat system, A09: Integumentary system, A13: General and other, T12: Limb injuries
3. Due to differences in the ranking of triage codes between 2018 and 2019, the ‘Total’ column represents the aggregated ranking based on the combined frequencies of triage codes from both years, presented in descending order

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