Higher score increases short-term risk of stroke, thus may warrant inpatient treatment period for both observation and expedited neuroimaging. Many clinicians discharge with score <4.
Giles MF et al. Early stroke risk and ABCD2 score performance in tissue- vs time-defined TIA: a multicenter study. Neurology. 2011; 77(13): 1222-8.
Josephson SA et al. Higher ABCD2 score predicts patients most likely to have true transient ischemic attack. Stroke. 2008; 39(11): 3096-8.