Table 2.

Outcome measures reported and compared by normal or elevated ONSD/ED.

	Normal ONSD/ED, 43 patients	Elevated ONSD/ED, 11 patients	Absolute difference	p-value
ICU-LOS, mean (CI)	26 (95% CI 21 to 30)	38 (95% CI 26 to 50)	− 12 (95% CI − 23 to − 2)	0.03
Percentage ICU survivors with ICU-LOS ≥ 30 days	32%	75%	− 43%	0.04
90 days mortality, percentage	36%	35%	1%	1.00

ICU-LOS intensive care unit length of stay, CI 95% confidence interval, ONSD/ED optic nerve sheath diameter divided by eyeball diameter.