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Comparison of benefit from TICI2c/3 over TICI 2b between patients with good (hypoperfusion intensity ratio [HIR] < 0.3) versus poor (HIR ≥ 0.3) collateral circulation. Models are adjusted for age, previous stroke/transient ischemic attack, baseline National Institutes of Health Stroke Scale score, intravenous thrombolysis, serum glucose level, first pass effect, hemorrhagic transformation, stroke-related pneumonia, urinary tract infection, and stroke etiology
