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. 2008 May 15;10(Suppl 2):49–53. doi: 10.1177/15910199040100S210

Table 3.

H & H Grade and SVS (%)

CE II III IV Total
DIND 5/76 (6.6) 4/60 (6.7) 5/30 (17) 8/166 (8.6)
p value 0.0011 0.006 0.37 < 0.0001
NC II III IV Total
DIND 16/59(27) 10/32(31) 3/10 (30) 29/101 (29)
H&H: Hunt and Hess. SVS: Symptomatic vasospasm.
CE: Coil embolization. NC: Neck clipping.