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Table 2: Baseline characteristics of patients undergoing Merci thrombectomy for acute ischemic stroke^a
Age <80 yr (n = 75) Age ≥80 yr (n = 31) P
Age (yr) 57.5 ± 16.0 85.9 ± 3.8 
Male sex 38 (51) 10 (32) .1
Dominant hemisphere or vertebrobasilar 39 (52) 20 (65) .2
Anterior circulation 70 (93) 30 (97) .7
Premorbid history of 
    Cardiac disease 38 (51) 21 (68) .1
    Hypertension 41 (55) 21 (68) .2
    Hyperlipidemia 22 (29) 10 (32) .8
    Diabetes 16 (21) 2 (6) .9
    Prior stroke or TIA 3 (4) 1 (3) 1
    Peripheral vascular disease 4 (5) 2 (6) 1
Cardioembolic source 41 (55) 25 (81) .02
AOL 2–3 58 (77) 25 (81) .8
Time to intervention (hr) 6:25 ± 2:49 6:21 ± 2:17 .9
Persistent mismatch following Merci^b 35/67 (52) 16/29 (55) .8
Intravenous or IA thrombolytic 27 (36) 11 (35) 1
Adjunctive therapy 6 (8) 2 (6) 1
Admission glucose (mg/dL) 142 ± 65 141 ± 42 .9
a  Baseline characteristic, No. (%) unless otherwise specified.
b  Eight patients younger than 80 year of age and 2 older did not have interpretable perfusion images.