Reliability and Recalibration of the Persian Version of Cumberland Ankle Instability Tool Cut-off Score in Athletes with Functional Ankle Instability

  • Maryam Mirshahi Sports Medicine Research Center, Tehran University of Medical Sciences, Tehran, Iran http://orcid.org/0000-0002-8754-4937
  • Farzin Halabchi Sports Medicine Research Center, Tehran University of Medical Sciences, Tehran, Iran http://orcid.org/0000-0002-3005-6190
  • Mohammadreza Golbakhsh Department of Orthopedic Surgery, Sina Hospital, Tehran University of Medical Sciences, Tehran, Iran
  • Soheil Saadat Trauma and Surgery Research Center, Sina Hospital, Tehran University of Medical Sciences, Tehran, Iran http://orcid.org/0000-0002-2744-7983
Keywords: Ankle Injuries, Athletes, Joint Instability, Patient Acuity, Reproducibility of Results

Abstract

Introduction: The Cumberland Ankle Instability Tool (CAIT) is a valid instrument for determining the presence and severity of functional ankle instability. This questionnaire was recently cross-culturally adapted into Persian; however, the reliability of the Persian version has not been examined in athletes. CAIT has also been used with various independently-selected cut-off scores to determine instability. Objective: The present study was conducted to evaluate the psychometric properties of the Persian version of CAIT and to determine its optimal cut-off score in athletic populations. Method: One-hundred and sixteen athletes (volleyball, basketball and track and field players) over 18 years old both with and without ankle instability completed the Persian version of the CAIT. The internal consistency, test-retest reliability and discriminative ability of the tool were assessed. A receiver operating characteristic (ROC) curve was drawn to confirm the cut-off point of the Persian version of CAIT using the Youden index. Results: The average CAIT score was 25.14±4.98 for the right and 25.76±4.94 for the left ankle. The Persian version of CAIT had a good internal consistency (Cronbach's α of 0.78 for the right ankle and 0.79 for the left ankle) and substantial reliability (ICC2, 1 = 0.88; 95% CI: 0.86 – 0.90) in athletes. No ceiling or floor effects were observed. The optimal cut-off score for discriminating between athletes with and without FAI was 24. Conclusion: The Persian version of CAIT was shown to be a reliable tool for assessing functional ankle instability among Iranian athletes.

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Published
2019-06-06
How to Cite
Mirshahi, M., Halabchi, F., Golbakhsh, M., & Saadat, S. (2019). Reliability and Recalibration of the Persian Version of Cumberland Ankle Instability Tool Cut-off Score in Athletes with Functional Ankle Instability. Advanced Journal of Emergency Medicine, 3(3), e26. https://doi.org/10.22114/ajem.v0i0.180
Section
Original article