Table 1:

Patient baseline characteristics and outcomes stratified by MCA occlusion location^{^a}

Characteristic	M2 Occlusion (n = 94)	M1 Occlusion (n = 367)	Missing
Age (median) (IQR) (yr)^{^b}	75 (63–82)	69 (58–78)	0
Female sex	51 (54.3)	193 (52.6)	0
Stroke presentation
Wake-up stroke	49/93 (52.7)	187/349 (53.6)	19
Baseline NIHSS (median) (IQR)^{^b}	10 (7–15)	16 (11–20)	1
Tandem cervical occlusion	10 (10.6)	46 (12.5)	0
IV Alteplase	12 (12.8)	34 (9.3)	0
Time metrics (median) (IQR) (min)
Time from onset to ED door	545 (368–730), [n = 91]	538 (405–692), [n = 342]	28
Time from onset to CT scan	579 (416–735), [n = 91]	551 (430–710), [n = 359]	11
Time from onset to puncture	744 (485–900), [n = 87]	631 (521–815), [n = 348]	26
Time from onset to reperfusion	762 (530–968), [n = 85]	671 (570–848), [n = 333]	26
Time from puncture to reperfusion^{^b}	45 (26–64), [n = 85]	30 (19–50), [n = 333]	25
Imaging factors
ASPECTS^{^b}	9 (8–10)	8 (7–9)	2
Use of perfusion imaging	67 (71.3)	223 (60.7)	0
Outcomes
Final TICI 2b–3	78 (82.9)	297 (81.1)	1
Final TICI 2c–3	29 (30.8)	119 (32.4)	1
SICH^{^b}	4/92 (4.3)	41/337 (12.2)	32
90-Day mRS (median) IQR)	2 (1–3) [n = 89]	3 (1–5) [n = 349]	23
90-Day mRS = 0–1	36/89 (40.4)	102/349 (29.2)	23
90-Day mRS = 0–2^{^b}	53/89 (59.6)	157/349 (45.0)	23
90-Day mortality	10/89 (11.2)	60/349 (17.2)	23

Note:—ED indicates emergency department.
↵a Values are expressed as median (IQR) or No. (%). Data are for the entire population unless otherwise specified in brackets.
↵b Significant difference between groups.