Fig. 2

Comparisons of the total intracranial and extracranial artery stenosis scores among subgroups

P₁: Non-drinkers vs. ≥280 g/week, P₂: Non-drinkers vs. 140–279 g/week, P₃: Non-drinkers vs. <140 g/week, P₄: Occasional drinkers vs. 140–279 g/week