Accuracy of Optic Nerve Sheath Diameter Measurement by Emergency Physicians Using Bedside Ultrasound

Optic Nerve Sheath Diameter Measurement During Diabetic Ketoacidosis: A Pilot Study

“…This is similar to previous data reported by Le et al, who demonstrated good interrater agreement of ONSD measurements obtained by pediatric emergency medicine fellow/attending compared to a pediatric ophthalmologist (κ=0.64) and ophthalmic sonographer (κ=0.52) 8. Good to excellent agreement has also been demonstrated among adult emergency medicine resident/attending compared to CT (intraclass correlation coefficient 0.9; 95% CI [0.88–0.93]),44 and in studies using MRI45 and postmortem specimens 21…”

Inter‐rater Reliability of Sonographic Optic Nerve Sheath Diameter Measurements by Emergency Medicine Physicians

“…An ICC can be interpreted as optimal (ICC > 0.8), strong (ICC 5 0.7-0.8), moderate (ICC 5 0.5-0.6), fair (ICC 5 0.3-0.4), and poor (ICC 0-0.2). 5 In our study, the point estimates of IRR for ultrasound fellowship-trained and resident EM physicians exhibited strong and moderate agreement (ICC 5 0.73 and ICC 5 0.50), respectively. Although the higher point estimate for the ICC for the ultrasound fellowship-trained EM physician suggests decreased variation in measurement among the ultrasound fellowship-trained EM physician group as compared with the resident EM physician group, the wide confidence intervals around each ICC overlap suggest that these two ICCs are not statistically significant.…”

“…Intraclass coefficients have been used previously to evaluate IRR among other EM ultrasound screening techniques, such as abdominal aortic aneurysms, as well as to interpret ONSD measurement variability. An ICC can be interpreted as optimal (ICC > 0.8), strong (ICC = 0.7–0.8), moderate (ICC = 0.5–0.6), fair (ICC = 0.3–0.4), and poor (ICC 0–0.2) . In our study, the point estimates of IRR for ultrasound fellowship–trained and resident EM physicians exhibited strong and moderate agreement (ICC = 0.73 and ICC = 0.50), respectively.…”

Optic nerve sonography and ophthalmic artery Doppler velocimetry in healthy pregnant women: an Australian cohort study

“…Mean differences, 95% confidence intervals (CIs), and two‐sided P values are given with a significance level α of .05. Post hoc interreader and intrareader reliability of stored images of the ophthalmic artery Doppler waveform (for assessment of the second peak velocity) and the optic nerve sheath (for assessment of its diameter) was assessed by calculation of correlation coefficients ( r ), with a coefficient of 0 to .2 deemed to represent poor agreement, .3 to .4 fair agreement, .5 to .6 moderate agreement, .7 to .8 strong agreement, and >.8 optimal agreement . Statistical analyses were performed using both Excel (2016, Microsoft Corporation, Redmond, Washington) and STATA release 15 (2017, StataCorp, College Station, Texas).…”