Bedside ultrasonography of optic nerve sheath diameter for detection of raised intracranial pressure in nontraumatic neuro-critically ill patients

Table 2 Accuracy of optic nerve sheath diameter at cut-off of 5.7 mm with raised raised intracranial pressure on brain imaging

	Values	95%CI
Sensitivity	77.55	63.38-88.23
Specificity	89.06	78.75-95.49
Positive likelihood ratio	7.09	3.47-14.50
Negative likelihood ratio	0.25	0.15-0.43
Disease prevalence	43.36	34.07-53.01
Positive predictive value	84.44	72.64-91.73
Negative predictive value	83.82	75.36-89.78
Accuracy	84.07	76.00-90.28