PHASES ScoreLoading...PopulationNorth American, European (other than Finnish)0Japanese+3Finnish+5HypertensionNo0Yes+1Age< 70 years0≥ 70 years+1Size of aneurysm< 7.0 mm07.0-9.9 mm+310.0-19.9 mm+6≥ 20.0 mm+10Earlier SAH from another aneurysmNo0Yes+1Site of aneurysmInternal carotid artery (ICA)0Middle cerebral artery (MCA)+2ACA, PCA, posterior circulation+4