Table 2 Prognosis of patients with acute ischemia stroke who received additional care incentives within the emergency department quality improvement program and those who did not.

Variables						P	Unadjusted				Adjusted
Variables	N					P		95%CI		P		95%CI		P
30 days mortality		Mortality(n)		%		Log-rank test < 0.001	HR				aHR
Non-EDQIP group	5628	834		15			1.00				1.00
EDQIP group	1407	87		6			0.40	0.32	0.50	< 0.001	0.40	0.32	0.50	< 0.001^a
Hospital length of stay		Mean	STD	Median	IQR	Wilcoxson sign rank test < 0.001	Ratio				Ratio
Non-EDQIP group	5628	25.49	36.12	18	26(8–34)		1.00				1.00
EDQIP group	1407	20.92	32.06	12	20(7–27)		0.82	0.77	0.87	< 0.001	0.82	0.78	0.87	< 0.001^b
ICU length of stay		Mean	STD	Median	IQR	Wilcoxson sign rank test < 0.001	Ratio				Ratio
Non-EDQIP group	5628	5.84	5.92	4	5(2–7)		1.00				1.00
EDQIP group	1407	3.68	4.13	2	2(2–4)		0.68	0.63	0.74	< 0.001	0.69	0.65	0.72	< 0.001^b
72-hour ED revisits		Revisits (n)		%		McNemar’s test	OR				aOR
Non-EDQIP group	5628	400		7		0.01	1.00				1.00
EDQIP group	1407	73		5			0.73	0.57	0.94	0.014	0.74	0.57	0.94	0.016^c

Emergency Department Quality Improvement Program (EDQIP); intensive care unit (ICU); Emergency department (ED); standard deviation (STD), interquartile range (IQR).
Multivariate model adjusted for age, sex, monthly income, urbanization level, CCI score, hospital level, hospital type, and ICU admission status.
^aStratified Cox proportional-hazards regression.
^bMultiple regression with logarithmic transformation and generalized estimating equations.
^cConditional logistic regression.

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