Table 2.

EVT-related outcomes

	Repeated imaging (n=165)	No repeated imaging (n=386)	P value
Groin puncture – no./total (%)	75/165 (45%)	326/386 (84%)	<0.01
Persistent LVO, ≥1 MT attempt(s)	57/165 (35%)	261/386 (68%)	<0.01
Persistent LVO, no access to occlusion location	12/165 (7%)	35/386 (9%)	0.49
LVO resolved, angiography only*	6/165 (4%)	29/386 (8%)	0.09
Subgroup: patients who underwent groin puncture
	Repeated imaging (n=75)	No repeated imaging (n=326)	Unadjusted β (95% CI)	Adjusted β (95% CI)
CSC door-to-groin time§ – median (IQR)	43 (35 to 59)	27 (19 to 37)	19.9 (14.7 to 25.1)	20.0 (14.8 to 25.3)†
PSC door-to-groin time¶ – median (IQR)	147 (118 to 190)	124 (104 to 154)	22.6 (9.6 to 35.6)	26.9 (14.2 to 39.6)‡
Onset-to-groin time** – median (IQR)	198 (167 to 261)	195 (156 to 249)	11.1 (-9.6 to 31.9)	15.0 (-6.0 to 35.9)‡

*Among patients who underwent a cerebral angiography only, one periprocedural complication was reported (femoral pseudoaneurysm, in the repeated imaging group).

†Adjusted for: age, previous stroke, NIHSS score, location of occlusion on first CTA, presentation outside office hours.

‡Adjusted for: age, previous stroke, NIHSS score, location of occlusion on first CTA, presentation outside office hours, treatment with intravenous thrombolysis.

§Number of missing values: 27.

¶55.

**17.

CSC, comprehensive stroke center; CTA, CT angiography; EVT, endovascular treatment; LVO, large vessel occlusion; MT, mechanical thrombectomy; NIHSS, National Institutes of Health Stroke Scale; no., number; PSC, primary stroke center.