|
Title
|
|
|
|
Vestibular evoked myogenic potentials: test-retest reliability and normative values obtained with a feedback method for the sternocleidomastoid muscle contraction
| |
|
Author
|
|
|
|
| |
|
Abstract
|
|
|
|
| Objective: To determine normal limits and to analyse the test-retest reliability of the vestibular evoked myogenic potentials (VEMPs) parameters. Methods: The VEMP procedure was repeated on different test days to analyze test-retest differences. We calculated several reliability parameters: intraclass reliability coefficient (ICC), method error (ME), coefficient of variation of the method error (CV_{ME}), standard error of measurement (SEM) and minimal difference (MD) for test-retest measurements. Normal values for left-right differences, based on the interaural ratio (IAR), were determined. Results: For each VEMP parameter, the ICC values indicated excellent reliability, except for p13 and corrected amplitude (fair to good reliability). The CV_{ME} values were less than 7% for p13, n23, threshold, MRV_{females} and MRV_{males}. For the parameters corrected amplitude and raw amplitude, the CV_{ME} values exceeded 15%. The 95% IAR prediction intervals (PIs) were also largest for the parameters raw amplitude and corrected amplitude. Conclusion: In order to evaluate a VEMP outcome in a patient, the VEMP parameters and IAR values can be compared with the 95% PI of the normal values. When successive measurements are performed within the same subjects, the minimal difference (MD) serves as a tool to decide whether these differences are clinically relevant or not. |
| |
|
Language
|
|
|
|
English
| |
|
Source (journal)
|
|
|
|
Journal of vestibular research: an international journal of experimental and clinical vestibular science. - Amsterdam
| |
|
Publication
|
|
|
|
Amsterdam
:
2009
| |
|
ISSN
|
|
|
|
0957-4271
0957-4271
| |
|
DOI
|
|
|
|
10.3233/VES-2009-0358
| |
|
Volume/pages
|
|
|
|
19
:3/4
(2009)
, p. 127-135
| |
|
ISI
|
|
|
|
000278216700006
| |
|
Full text (Publisher's DOI)
|
|
|
|
| |
|