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- Title
Are mean gain values significantly altered by manual data selection when performing complete video Head Impulse Test on all six semicircular canals.
- Authors
Abrahamsen, Emil Riis; Hougaard, Dan Dupont
- Abstract
Purpose: The primary endpoint was to evaluate whether the averaged vestibular-ocular reflex (VOR) gain values of all six semicircular canals (SCCs) are significantly altered by manual data selection with two different v-HIT systems or not. Methods: 120 subjects with previously neither vestibular nor neurological disorders underwent four separate tests of all six SCCs with either EyeSeeCam® or ICS Impulse® v-HIT systems. All v-HIT test reports underwent manual data selection by an experienced ENT Specialist with deletion of any noise and/or artifacts. Generalized estimating equations were used to compare averaged gain values based upon unsorted data with averaged gain values based on the sorted data. Results: EyeSeeCam®: Horizontal SCCs: The estimate and the p-value (shown in parenthesis) for the right lateral SCC and the left lateral SCC were 0.00004 (0.95) and 0.00087 (0.70) respectively. Vertical SCCs: The estimate varied from -0.00858 to 0.00634 with p-values ranging from 0.31 to 0.78. ICS Impulse®: Horizontal SCCs: The estimate and the p-value for the right lateral SCC and the left lateral SCC were 0.00159 (0.18) and 0.00071 (0.38) respectively. Vertical SCCs: The estimate varied from 0.00217 to 0.01357 with p-values ranging from 0.00 to 0.17. Based upon the averaged gain value from the individual SCC being tested, 148 tests before and 127 after manual data selection were considered pathological. Conclusion: None of the two v-HIT systems revealed any clinically important effects of manual data selection. However, 21 fewer tests were considered pathological after manual data selection.
- Subjects
SEMICIRCULAR canals; GENERALIZED estimating equations
- Publication
International Archives of Otorhinolaryngology, 2022, Vol 26, p1
- ISSN
1809-9777
- Publication type
Article