Cost Control of Treatment for Cerebrovascular Patients Using a Machine Learning Model in Western China

Table 3

Results of first grouping rule (with LOS) and hospitalization expense for cerebrovascular disease patients (US dollars).

Group no.	Grouping rules	N (%)	Mean in US dollars	Median ± IQR	CV	Weight	Cost limit	Excess amount N (%)
DRG 1	Grade secondary hospital, LOS < 13 d	16,787 (42%)	760	710 ± 501	0.47	0.59	11,020	29 (1.74%)
DRG 2	Grade tertiary hospital, LOS ≤ 9 d	8,344 (21%)	1,125	1004 ± 761	0.60	0.88	15,755	282 (3.38%)
DRG 3	Grade tertiary hospital, LOS 9∼13 d	3,741 (9%)	1,620	1503 ± 1195	0.42	1.26	23,700	62 (1.66%)
DRG 4	Grade secondary hospital, LOS ≥ 13 d	5,046 (13%)	1,409	1336 ± 1043	0.36	1.09	21,044	1 (0.02%)
DRG 5	Grade tertiary hospital, CCs with the cerebral arteries lack blood supply, lacunar infarction, chronic cerebral ischemia	2,618 (7%)	2,007	1834 ± 2007	0.42	1.56	29,132	52 (1.99%)
DRG 6	Grade tertiary hospital, CCs with cerebral infarction, principal diagnosis ICD I60, I63, I65, I66, I67, I69	2,007 (5%)	2,957	2602 ± 1923	0.46	2.30	42,263	42 (2.09%)
DRG 7	Grade tertiary hospital, CCs with cerebral infarction, principal diagnosis ICD I61, I62, I64, I68	1,246 (3%)	3,368	3403 ± 2337	0.44	2.86	46,271	21 (1.68%)