Age 60 or older at the time of the TIA.
Blood pressure at first assessment Either SBP ≥ 140 OR DBP ≥ 90 satisfies the criterion.
Pick the single strongest feature of the index event.
Duration of the focal neurologic symptoms at peak — use the longest contiguous episode.
Pre-existing type 1 or type 2 diabetes on any therapy (lifestyle, oral, insulin).