Table 2.

Socio-demographic and clinical characteristics of patients with high and low CSF ET-1 levels

Characteristic		Group		P value
		Low N = 59 N (%)	High N = 47 N (%)
Gender	Male	16 (27%)	15 (32%)	0.59
	Female	43 (73%)	32 (68%)
Race	Non-white	9 (15%)	5 (11%)	0.49
	White	50 (85%)	42 (89%)
Aneurysm side	Left	10 (29%)	10 (40%)	0.40
	Right	24 (71%)	15 (60%)
Aneurysm locale	Anterior	44 (75%)	35 (74%)	0.99
	Posterior	15 (25%)	12 (26%)
Intervention	Clipping	31 (53%)	32 (68%)	0.11
	Coiling	28 (47%)	15 (32%)
Drainage device	External ventricular (EVD)	43 (42%)	36 (34%)	0.95
	Lumbar (LD)	8 (7%)	5 (5%)
	EVD then LD	8 (7%)	6 (6%)
Hunt and Hess grade	I–II	19 (32%)	11 (23%)	0.32
	III–V	40 (68%)	36 (77%)
Fisher grade	2	16 (27%)	10 (21%)	0.66
	3	26 (44%)	25 (53%)
	4	17 (29%)	12 (26%)
Vasospasm	Negative	19 (32%)	21 (45%)	0.10
	Positive	16 (27%)	15 (32%)
	Unavailable	24 (41%)	11 (23%)
DCI	Negative	28 (48%)	15 (32%)	0.21
	Positive	22 (37%)	20 (43%)
	Unavailable	9 (15%)	12 (25%)

	Low			High			P value
	N	Mean (SD)	Range	N	Mean (SD)	Range
Age	59	53 (11)	29–75	47	55 (10)	24–74	0.50
Years of education	34	12 (3)	3–20	23	13 (3)	3–16	0.88