Table 2.

HHC grade in the two groups before and after treatment (n, %)

Group	HHC grade I	HHC grade II	HHC grade III	HHC grade IV	HHC graade I-II
Microsurgical clipping group (n=30)
At admission	7 (23.33)	15 (50.00)	6 (20.00)	2 (6.67)	22 (73.33)
At discharge	10 (33.33)	16 (53.33)	3 (10.00)	1 (3.33)	28 (93.33)*
Arterial embolization group (n=38)
At admission	7 (18.42)	19 (50.00)	10 (26.32)	2 (5.26)	26 (68.42)
At discharge	9 (23.68)	22 (57.89)	6 (15.79)	1 (2.63)	31 (81.58)*

Note: Compared with the same group at hospital admission;

^*P<0.05.

HHC: Hunt-Hess classification.