Related Experiment Video
Updated: Jan 31, 2026

Holistic Facial Composite Creation and Subsequent Video Line-up Eyewitness Identification Paradigm
Published on: December 24, 2015
Reliability of grading of facial palsy using a video tutorial with synchronous video recording
Gerd Fabian Volk1,2, Rebecca Anna Schaede1, Jovanna Thielker1,2
1Department of Otorhinolaryngology, Jena University Hospital, Jena, Germany.
Objective:
To determine the intrarater, interrater, and retest reliability of facial nerve grading of patients with facial palsy (FP) using standardized videos recorded synchronously during a self-explanatory patient video tutorial.
Study Design:
Prospective, observational study.
Methods:
The automated videos from 10 patients with varying degrees of FP (5 acute, 5 chronic FP) and videos without tutorial from eight patients (all chronic FP) were rated by five novices and five experts according to the House-Brackmann grading system (HB), the Sunnybrook Grading System (SB), and the Facial Nerve Grading System 2.0 (FNGS 2.0).
Results:
Intrarater reliability for the three grading systems was very high using the automated videos (intraclass correlation coefficient [ICC]; SB: ICC = 0.967; FNGS 2.0: ICC = 0.931; HB: ICC = 0.931). Interrater reliability was also high (SB: ICC = 0.921; FNGS 2.0: ICC = 0.837; HB: ICC = 0.736), but for HB Fleiss kappa (0.214) and Kendell W (0.231) was low. The interrater reliability was not different between novices and experts. Retest reliability was very high (SB: novices ICC = 0.979; experts ICC = 0.964; FNGS 2.0: novices ICC = 0.979; experts ICC = 0.969). The reliability of grading of chronic FP with SB was higher using automated videos with tutorial (ICC = 0.845) than without tutorial (ICC = 0.538).
Conclusion:
The reliability of the grading using the automated videos is excellent, especially for the SB grading. We recommend using this automated video tool regularly in clinical routine and for clinical studies.
Level Of Evidence:
4 xsLaryngoscope, 129:2274-2279, 2019.
More Related Videos
08:12Calculating Heart Rate Variability from ECG Data from Youth with Cerebral Palsy During Active Video Game Sessions
Published on: June 5, 2019
10:41Using Electroencephalography Measurements and High-quality Video Recording for Analyzing Visual Perception of Media Content
Published on: May 26, 2018
Related Concept Videos
Endoscopic Procedures III: Video Capsule Endoscopy
Reliability and Validity
Graded Potential
Graded potentials fall into two categories: depolarizing and hyperpolarizing. Depolarizing graded potentials typically occur when sodium (Na+) or...
Muscles for Facial Expressions
Types of Aggregate Grading
Well-graded aggregates include a complete range of necessary size fractions that fit together to create a dense matrix with minimal voids, represented by a smooth, continuous gradation curve. This type of grading ensures good...
Facial Feedback Hypothesis