Baseline Blood Glucose

Glucose ≤ 8.0 mmol/L (≤144 mg/dL)+0Glucose > 8.0 mmol/L (>144 mg/dL) (+1 pt)+1

Age

< 65 years+065–79 years (+1 pt)+1≥ 80 years (+2 pts)+2

NIHSS Score at Presentation

NIHSS 0–4+0NIHSS 5–9 (+3 pts)+3NIHSS 10–15 (+5 pts)+5NIHSS ≥ 16 (+8 pts — but capped after other variables)+8

Hypo-dense Area on Pre-Treatment CT

No hypodensity+0Hypo-dense area < 1/3 MCA territory (+1 pt)+1Hypo-dense area ≥ 1/3 MCA territory OR dense MCA sign (+2 pts)+2

Pre-Existing Rankin Score ≥ 2 (Prior Neurological Disability)

No prior disability (mRS 0–1)+0Prior disability (mRS ≥ 2) (+1 pt)+1

DRAGON Score for Post-tPA Stroke Outcome