Table 1.

Patient demographics

Patient characteristic	Suspected seizures (n = 31)	No suspicion for seizures (n = 38)	Significance OR [95 % CI]
Demographics
Female, n (%)	20 (66.2 %)	24 (64.4)	0.94 [0.35–2.53]
Age, mean (SD)	62.8 (13.7)	55.1 (14.0)	t(67) = 2.30, p = 0.02*
Clinical presentation
Glascow coma scale, median (IQR)	11 IQR [3–14]	14 IQR [3–15]	z = 1.04, p = 0.30
Thick cisternal blood (F 3), n (%)	21 (67.7 %)	30 (79.0 %)	0.56 [0.19–1.66]
High clinical grade (HH 4–5), n (%)	16 (55.2 %)	9 (24.3 %)	3.83 [1.34–10.93]**
Intraparenchymal hemorrhage, n (%)	5 (16.1 %)	10 (27.0 %)	0.52 [0.16–1.73]
Intraventricular hemorrhage, n (%)	20 (64.5 %)	28 (73.7 %)	0.65 [0.23–1.82]
Hydrocephalus, n (%)	17 (54.8 %)	21 (55.3 %)	0.98 [0.38–2.55]
Size of aneurysm (mm): mean (SD)	6.3 (4.0)	6.7 (3.8)	t(59) = −0.40; p = 0.70
MCA aneurysm Location, n (%)	4 (12.9 %)	4 (10.5 %)	1.26 [0.29–5.50]
ACA aneurysm location, n (%)	2 (6.5 %)	3 (7.9 %)	0.80 [0.13–5.15]
Craniotomy, n (%)	17 (54.8 %)	28 (73.7 %)	0.43 [0.16–1.19]
Electrophysiology
Seizure at ictus, n (%)	7 (22.6 %)	4 (12.1 %)	2.11 [0.55–8.01]
AED at time of EEG, n (%)	15 (48.4 %)	23 (60.5 %)	0.61 [0.23–1.59]
Time to EEG from SAH (days), mean (SD)	3.9 (3.68)	2.7 (3.68)	t(67) = 1.88; p = 0.06
cEEG duration (days), mean (SD)	4.0 (4.27)	7.0 (2.95)	t(67) = −3.45; p < 0.01**

IQR inter-quartile range, MCA middle cerebral artery, ACA anterior cerebral artery, AED anti-epileptic drug

^*p ≤ 0.05,

^**p ≤ 0.01