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Reevaluating Order Effects in the Binaural Bithermal Caloric Test.

Abstract

Purpose

The purpose of this study was to determine whether a significant order effect exists in the binaural bithermal caloric test.

Method

Fifteen volunteers (mean age = 24.3 years, range = 18-38 years) with no history of vestibular disorder, hearing loss, concussion, or neurological disease underwent caloric testing on 3 occasions. Irrigations were randomized using 8 possible order combinations. The parameters of interest included unilateral weakness, directional preponderance, total response from the right ear, and total response from the left ear.

Results

Order effects were analyzed using 2 methods. The first analysis was done looking at the 8 possible orders. We also had an a priori established hypothesis that the first irrigation tested would influence the calculation of unilateral weakness more than the other 3 irrigations. To test this hypothesis, the 8 orders were condensed into 4 order conditions based on the first irrigation. The effect of order was determined using analysis of variance tests. Although the first irrigation tended to be the largest, no significant effects were observed.

Conclusions

This experiment demonstrated that while there is great inter-individual and intra-individual variability in caloric test results, the order of irrigations had no significant effect in the test. Future studies may explore the effects of nonphysiological factors on test results.

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  • Authors+Show Affiliations

    ,

    Duke University, Durham, NC.

    ,

    Duke University, Durham, NC. James Madison University, Harrisonburg, VA.

    Duke University, Durham, NC.

    Source

    American journal of audiology 27:1 2018 Mar 08 pg 104-109

    MeSH

    Adolescent
    Adult
    Caloric Tests
    Female
    Healthy Volunteers
    Humans
    Male
    Observer Variation
    Reference Values
    Supine Position
    Vestibular Function Tests
    Vestibule, Labyrinth
    Young Adult

    Pub Type(s)

    Comparative Study
    Journal Article

    Language

    eng

    PubMed ID

    29383375

    Citation

    Burnette, Elizabeth, et al. "Reevaluating Order Effects in the Binaural Bithermal Caloric Test." American Journal of Audiology, vol. 27, no. 1, 2018, pp. 104-109.
    Burnette E, Piker EG, Frank-Ito D. Reevaluating Order Effects in the Binaural Bithermal Caloric Test. Am J Audiol. 2018;27(1):104-109.
    Burnette, E., Piker, E. G., & Frank-Ito, D. (2018). Reevaluating Order Effects in the Binaural Bithermal Caloric Test. American Journal of Audiology, 27(1), pp. 104-109. doi:10.1044/2017_AJA-17-0028.
    Burnette E, Piker EG, Frank-Ito D. Reevaluating Order Effects in the Binaural Bithermal Caloric Test. Am J Audiol. 2018 Mar 8;27(1):104-109. PubMed PMID: 29383375.
    * Article titles in AMA citation format should be in sentence-case
    TY - JOUR T1 - Reevaluating Order Effects in the Binaural Bithermal Caloric Test. AU - Burnette,Elizabeth, AU - Piker,Erin G, AU - Frank-Ito,Dennis, PY - 2017/03/16/received PY - 2017/09/28/accepted PY - 2018/2/1/pubmed PY - 2018/9/25/medline PY - 2018/2/1/entrez SP - 104 EP - 109 JF - American journal of audiology JO - Am J Audiol VL - 27 IS - 1 N2 - Purpose: The purpose of this study was to determine whether a significant order effect exists in the binaural bithermal caloric test. Method: Fifteen volunteers (mean age = 24.3 years, range = 18-38 years) with no history of vestibular disorder, hearing loss, concussion, or neurological disease underwent caloric testing on 3 occasions. Irrigations were randomized using 8 possible order combinations. The parameters of interest included unilateral weakness, directional preponderance, total response from the right ear, and total response from the left ear. Results: Order effects were analyzed using 2 methods. The first analysis was done looking at the 8 possible orders. We also had an a priori established hypothesis that the first irrigation tested would influence the calculation of unilateral weakness more than the other 3 irrigations. To test this hypothesis, the 8 orders were condensed into 4 order conditions based on the first irrigation. The effect of order was determined using analysis of variance tests. Although the first irrigation tended to be the largest, no significant effects were observed. Conclusions: This experiment demonstrated that while there is great inter-individual and intra-individual variability in caloric test results, the order of irrigations had no significant effect in the test. Future studies may explore the effects of nonphysiological factors on test results. SN - 1558-9137 UR - https://www.unboundmedicine.com/medline/citation/29383375/Reevaluating_Order_Effects_in_the_Binaural_Bithermal_Caloric_Test L2 - https://pubs.asha.org/doi/full/10.1044/2017_AJA-17-0028?url_ver=Z39.88-2003&rfr_id=ori:rid:crossref.org&rfr_dat=cr_pub=pubmed DB - PRIME DP - Unbound Medicine ER -