Table 1

Intervention rates for ruptured and unruptured arteriovenous malformations in the 4-year periods pre- and post-ARUBA

	Ruptured					Unruptured
	2010–2013		2014–2017		P value	2010–2013		2014–2017		P value
	Freq	%	Freq	%		Freq	%	Freq	%
Discharges	6613	14.7	8415	18.6	<0.0001	38 488	85.3	36 780	81.4	<0.0001
No Intervention	4658	70.4	6115	72.7	0.2229	27 581	71.7	28 595	77.7	<0.0001
Intervention performed	1955	29.6	2300	27.3	0.2229	12 155	28.1	8755	22.3	<0.0001
Intervention type					0.0039					<0.0001
EVT	617	9.3	1000	11.9		5844	15.2	4720	12.8
EVT+SRS	5	0.07	0	0		14	0.03	5	0.01
EVT+SRS+surgery	5	0.07	0	0		5	0.01	0	0
EVT+Surgery	270	4.1	250	3		784	2	440	1.2
SRS	20	0.3	20	0.23		157	0.4	55	0.15
SRS+surgery	0	0	0	0		0	0	10	0.3
Surgery	1038	15.7	1030	12.2		4103	10.7	2955	8

ARUBA, A Randomized Trial of Unruptured Brain Arteriovenous Malformations; EVT, endovascular treatment; SRS, stereotactic radiosurgery.