Table 1.

Comparison of patients with enlarged ONS diameter (≥ 4.3 mm) with patients with normal ONS diameter (< 4.3 mm)

	Enlarged ONS diameter (%)	Normal ONS diameter (%)	P value
All patients (N = 112)	55 (49)	57 (51)
Papilledema present	25 (45)	2 (4)
Median CSF opening pressure (N = 46)	220 mmCSF (N = 17)	160 mmCSF (N = 29)	0.002*
Deaths	9 (16)	11 (19)	0.9†
Neurological sequelae in survivors	7/46 (15)	2/46 (4)	< 0.05‡
Median BCS on admission	1	2	0.67†
Mean time to BCS three (hours)	39	22	0.07*
Mean time to BCS five (hours)	50	37	0.11*
Fits on admission (N = 107)	16 (31)	9 (16)	0.07†
Fits during admission (N = 107)	23 (45)	17 (30)	0.11†

^*Student t test.

^†χ² test.

^‡Fisher exact test.

Significant P values are in bold.