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Related Concept Videos

Cochran's Q Test01:17

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Cochran's Q Test is a nonparametric statistical test used to determine if there are potential differences in the outcomes of three or more related groups on a binary (yes/no) or dichotomous outcome. It is essentially an extension of the McNemar Test, which is limited to two related samples - Cochran's Q test can handle three or more related samples, making it more versatile in scenarios where subjects are measured under multiple conditions. The test statistic follows a Chi-Square...
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Related Experiment Video

Updated: Feb 24, 2026

Systematic Hearing Performance Evaluation Process for Adolescents with Cochlear Implantation at Early Ages
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Systematic Hearing Performance Evaluation Process for Adolescents with Cochlear Implantation at Early Ages

Published on: March 24, 2023

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Cognitive Evaluation of Cochlear Implanted Adults Using CODEX and MoCA Screening Tests.

Emmanuèle Ambert-Dahan1, Shirley Routier, Lucie Marot

  • 1*AP-HP, GHU Pitié-Salpêtrière, Service ORL, Otologie, Implants auditifs et Chirurgie de la base du crâne †Sorbonne Universités, Université Pierre et Marie Curie Paris 6, Inserm, Unité Réhabilitation Chirurgicale mini-invasive et robotisée de l'audition, Paris, France.

Otology & Neurotology : Official Publication of the American Otological Society, American Neurotology Society [And] European Academy of Otology and Neurotology
|August 15, 2017
PubMed
Summary

Short cognitive tests, COgnitive Disorders EXamination (CODEX) and Montreal Cognitive Assessment (MoCA), can effectively screen for cognitive impairment in patients undergoing cochlear implantation. These tests aid in monitoring cognitive changes after hearing restoration.

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Area of Science:

  • Audiology
  • Neuroscience
  • Gerontology

Background:

  • Established link between hearing loss and cognitive decline.
  • Need for accessible tools to assess cognitive function in hearing-impaired individuals.

Purpose of the Study:

  • Evaluate the utility of CODEX and MoCA for detecting cognitive impairment.
  • Assess cognitive changes post-cochlear implantation.

Main Methods:

  • 18 patients with severe-to-profound hearing loss tested pre- and post-cochlear implantation.
  • Visual presentation of CODEX and MoCA tests.
  • Auditory performance assessed in quiet and noise.

Main Results:

  • Significant hearing improvement 12 months post-implantation.
  • Four out of eight patients with initial cognitive impairment normalized their scores.
  • No significant cognitive decline observed in initially unimpaired patients.

Conclusions:

  • CODEX and MoCA are rapid and relevant screening tests for cognitive performance.
  • These tests can be integrated into clinical practice for sensory-cognitive monitoring.
  • Supports multidisciplinary care for the elderly with hearing loss.