Table 1

Patient demographics

DemographicsAll patientsGroup 1P valueGroup 2Group 3P value
N2501537720
Age, years72.372.10.9972.2740.59
Female (%)57%55%0.5760%60%1
NIHSS17.716.70.4319.020.20.38
tPA (%)36%35%0.8836%40%0.80
ASPECTS8.78.90.028.48.60.67
Time from symptom onset (minutes)4200.554625040.77
Occlusion location0.230.94
 ICA terminus26%22%32%35%
 M158%60%55%50%
 M216%18%13%15%
Comorbid conditions
 Hypertension76%76%0.8778%75%0.77
 Prior TIA/stroke17%16%0.3621%10%0.35
 Tobacco user22%23%0.3117%30%0.20
 Atrial fibrillation44%46%0.7848%20%0.04
 Diabetes mellitus22%23%0.6119%20%1
 Coronary artery disease31%35%0.3027%15%0.38
 ETOH abuse6%8%0.404%0%0.61
 Hyperlipidemia56%56%0.7858%45%0.44
  • Reported p values are compared with the reference group (group 2).

  • ASPECTS, Alberta Stroke Program Early CT Score; ETOH, ethanol; ICA, internal carotid artery; NIHSS, National Institutes of Health Stroke Scale; TIA, transient ischemic attack; tPA, tissue plasminogen activator.