Table 5.

Univariate and multivariate analyses of outcomes among patients receiving intra-arterial treatment for stroke based on procedural volume per hospital (Paul Coverdell National Acute Stroke Program, 2008–2018)

	Volume per site	OR (95% CI)	P value	AOR (95% CI)*	P value
Symptomatic intracranial hemorrhage	<15	1.30 (1.01 to 1.66)	0.04	1.32 (1.02 to 1.70)	0.033
	15–30	Ref		Ref
	>30	0.99 (0.81 to 1.20)	0.89	0.97 (0.80 to 1.18)	0.78
In-hospital mortality	<15	1.17 (0.999 to 1.37)	0.051	1.15 (0.97 to 1.37)	0.11
	15–30	Ref		Ref
	>30	0.88 (0.78 to 0.995)	0.04	0.88 (0.78 to 1.00)	0.052
Discharge to home	<15	0.77 (0.67 to 0.88)	0.0001	0.70 (0.60 to 0.82)	<0.0001
	15–30	Ref		Ref
	>30	1.17 (1.07 to 1.29)	0.0007	1.25 (1.13 to 1.39)	<0.0001

GEE model was used to obtain the OR and AOR.

^*Adjusted by age, sex, race, arrival by emergency medical services, and NIH Stroke Scale score.