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Table 1 Baseline patient characteristics of included studies

From: Endovascular thrombectomy after anterior circulation large vessel ischemic stroke: an updated meta-analysis

Studies (author, publication year)

Country

Study design

No. of patients

Gender

Median age (IQR), mean ± SD

Baseline NIHSS score mean (SD)

ASPECTS on baseline CT mean (SD)

Internal carotid artery occlusion [n (%)]

M1 segment middle cerebral artery occlusion [n (%)]

M2 segment middle cerebral artery occlusion [n (%)]

Male [n (%)]

Female [n (%)]

Huo (2023) [15]

China

RCT

MM: 225

EVT + MM: 230

MM: 144 (64.0)

EVT + MM: 135 (58.7)

MM: 81 (36)

EVT + MM: 95 (41.3)

MM: 67 (59–73)

EVT + MM: 68 (61–73)

MM: 15 (12–19)

EVT + MM: 16 (13–20)

MM: 3

(3–4)

EVT + MM: 3

(3–4)

MM: 81 (36.0)

EVT + MM: 83 (36.1)

MM: 142 (63.1)

EVT + MM: 145 (63.0)

MM: 2 (0.9)

EVT + MM: 2 (0.9)

Sarraj (2023) [5]

USA

RCT

MM: 174

EVT + MM: 178

MM: 98 (57.0) EVT + MM: 109 (60.6)

MM: 74 (42.5) EVT + MM: 71 (39.9)

MM: 67 (58–75)

EVT + MM: 66 (58–75)

MM: 19 (15–22)

EVT + MM: 19 (15–23)

MM: 4

(4–5)

EVT + MM: 4

(3–5)

MM: 66 (38.4)

EVT + MM: 80 (44.4)

MM: 98 (57.0)

EVT + MM: 93 (51.7)

MM: 8 (4.7)

EVT + MM: 7

(3.9)

Bendszus (2023) [17]

Worldwide

RCT

MM: 128

EVT + MM: 125

MM: 51 (48.0) EVT + MM: 59 (55)

MM: 67 (52) EVT + MM: 56 (45)

MM: 74 (64–80)

EVT + MM: 73 (65–81)

MM: 18 (15–22)

EVT + MM: 19 (16–22)

NR

MM: 37 (29)

EVT + MM: 41 (33)

MM: 88 (69)

EVT + MM: 83 (66)

MM: 7 (5)

EVT + MM: 0 (0)

Albers (2018) [18]

USA

RCT

MM: 90

EVT + MM: 92

NR

MM: 46 (51) EVT + MM: 46 (50)

MM: 71 (95–80)

EVT + MM: 70 (59–79)

MM: 16 (12–21)

EVT + MM: 16 (10–20)

MM:8

(7–9) EVT + MM: 8

(7–9)

MM: 36 (40)

EVT + MM: 32 (35)

MM: 54 (60)

EVT + MM: 60 (65)a

Nogueria (2018) [19]

Worldwide

RCT

MM:99

EVT + MM: 107

MM: 51 (52) EVT + MM: 42 (39)

NR

MM: 70.7 (13.2)

EVT + MM: 69.4 (14.1)

MM: 17 (13–21)

EVT + MM: 17 (14–21)

NR

MM: 19 (19)

EVT + MM: 22 (21)

MM: 77 (78)

EVT + MM: 83 (78)

MM: 2 (2)

EVT + MM: 3 (3)

Yoshimura (2022) [14]

Japan

RCT

MM: 102

EVT + MM: 101

MM: 58 (56.9)

EVT + MM: 55 (54.5)

MM: 44 (43.1)

EVT + MM: 46 (45.5)

MM: 75.7 ± 10.2

EVT + MM: 76.6 ± 10.0

MM: 22 (17–26)

EVT + MM: 22 (18–26)

MM: 4

(3–4)

EVT + MM: 3

(3–4)

MM: 49 (48.0)

EVT + MM: 47 (46.5)

MM: 70 (68.6)

EVT + MM: 74 (73.3)

MM: 3 (2.9)

EVT + MM: 0

Khoury (2017) [7]

Canada

RCT

MM: 37

EVT + MM: 40

MM: 20 (54.1)

EVT + MM: 18 (45)

MM: 17 (45.9)

EVT + MM: 22 (55.0)

MM: 71 (59–79)

EVT + MM: 74 (62.7–80)

MM: 20 (12.00–23.00)

EVT + MM: 18 (13.00–21.75)

MM: 9

(8–9)

EVT + MM: 8

(7–9)

MM: 2 (5.4)

EVT + MM: 6 (15.0)

MM: 24 (64.9)

EVT + MM: 17 (42.5)

MM: 6 (16.2)

EVT + MM: 12 (30.0)

Mocco (2016) [9]

USA

RCT

MM: 62

EVT + MM: 43

MM: 23 (43)

EVT + MM: 34 (62)

MM: 30/53 (57)

EVT + MM: 21/55 (38)

MM: 70 (10)

EVT + MM: 67 (11)

MM: 18 [14.22]

EVT + MM: 17 [13.22]

MM: 8.0 (7–9)

EVT + MM: 7.5 (6–9)

MM: 23% (12/53)

EVT + MM: 33% (18/55)

MM: 68% (36/53)

EVT + MM: 56% (31/55)

MM: 9.4% (5/53)

EVT + MM: 11% (6/55)

Muir (2017) [6]

UK

RCT

MM: 32

EVT + MM: 33

MM: 16 (50)

EVT + MM: 13 (39)

MM: 16 (50)

EVT + MM: 20 (61)

MM: 64 ± 16

EVT + MM: 67 ± 17

MM: 14 (6–29)

EVT + MM: 18 (6–24)

MM: 9

(2–10)

EVT + MM: 9

(4–10)

MM: 6 (19)

EVT + MM: 4 (14)

MM: 21 (65)

EVT + MM: 22 (76)

MM: 5 (16)

EVT + MM: 3 (10)

Berkhermer (2015) [13]

Netherlands

RCT

MM: 267

EVT + MM: 233

MM: 157 (58.8)

EVT + MM: 135 (57.9)

MM: 110 (41.2)

EVT + MM: 98 (42.1)

MM: 65.7

EVT + MM: 65.8

MM: 18 (14–22)

EVT + MM: 17 (14–21)

MM: 9

(8–10)

EVT + MM: 9

(7–10)

MM: 75/266 (28.2)

EVT + MM: 59/233 (25.3)

MM: 165/266 (62.0)

EVT + MM: 154/233 (66.1)

MM: 21/266 (7.9)

EVT + MM: 18/233 (7.7)

Bracard (2016) [8]

France

RCT

MM: 208

EVT + MM: 204

MM: 104 (50)

EVT + MM: 116 (57)

MM: 104 (50)

EVT + MM: 88 (43)

MM: 68 (54–75)

EVT + MM: 66 (54–74)

MM: 17 (13–20)

EVT + MM: 18 (15–21)

MM: 0–4 (35 [17%]), 5–7 (52 [26%]), 8–10 (115 [57%])

EVT + MM: 0–4 (22 [11%]), 5–7 (80 [41%]), 8–10 (94 [48%])

MM: 24 (12)

EVT + MM: 24 (12)

MM: 164 (79)

EVT + MM: 176 (86)

MM: 2 (1)

EVT + MM: 0

Campbell (2015) [4]

Australia, New Zealand

RCT

MM: 35

EVT + MM: 35

MM: 17 (49)

EVT + MM: 17 (49)

MM: 18 (51)

EVT + MM: 18 (51)

MM: 70.2 ± 11.8

EVT + MM: 68.6 ± 12.3

MM: 13 (9–19)

EVT + MM: 17 (13–20)

NR

MM: 11 (31)

EVT + MM: 11 (31)

MM: 18 (51)

EVT + MM: 20 (57)

MM: 6 (17)

EVT + MM: 4 (11)

Goyal (2015) [11]

Worldwide

RCT

MM: 150

EVT + MM: 165

MM: 71 (47.3)

EVT + MM: 79 (47.9)

MM: 79 (52.7)

EVT + MM: 86 (52.1)

MM: 70

EVT + MM: 71

MM:17

EVT + MM: 16

MM: 9

(8–10)

EVT + MM: 9

(8–10)

MM: 39/147 (26.5)

EVT + MM: 45/163 (27.6)

MM: 105/147 (71.4)

EVT + MM: 111/163 (68.1)

MM: 3/147 (2.0)

EVT + MM: 6/163 (3.7)

Jovin (2015) [10]

Spain

RCT

MM: 103

EVT + MM: 103

MM: 54 (52.4)

EVT + MM: 55 (53.4)

MM: 49 (47.6)

EVT + MM: 48 (46.6)

MM: 67.2 ± 9.5

EVT + MM: 65.7 ± 11.3

MM: 17.0 (12.0–19.0)

EVT + MM: 17.0 (14.0–20.0)

MM: 8.0 (6.0–9.0)

EVT + MM: 7.0 (6.0–9.0)

MM: 27/101 (26.7)

EVT + MM: 26/102 (25.5)

MM: 26/102 (25.5)

EVT + MM: 66/102 (64.7)

MM: 8/101 (7.9)

EVT + MM: 10/102 (9.8)

Saver (2015) [12]

Worldwide

RCT

MM: 98

EVT + MM: 98

MM: 45/96 (47)

EVT + MM: 54/98 (55)

MM: 51/96 (53)

EVT + MM: 44/98 (45)

MM: 66.3 ± 11.3

EVT + MM: 65.0 ± 12.5

MM: 17

EVT + MM: 17

MM: 9

EVT + MM: 9

MM: 15/94 (16)

EVT + MM: 17/93 (18)

MM: 72/94 (77)

EVT + MM: 62/93 (67)

MM: 6/94 (6)

EVT + MM: 13/93 (14)

  1. NR Not reported, ASPECT Alberta stroke programme early CT score, RCT Randomized controlled trial, USA United States of America, UK United Kingdom, EVT + MM endovascular thrombectomy plus medical treatment, MM Medical treatment, IQR Interquartile range, NIHSS National institute health stroke scale, SD Standard deviation
  2. aAll middle-cerebral-artery occlusions involved the M1 segment, except in one patient in the medical-therapy group who had an occlusion involving the M2 segment