@article{19314,
  keywords = {Peer Reviewed Paper, Checked},
  author = {Refshauge K. and Hiller C. and Herbert Rob and Kilbreath S. and Bundy A.},
  title = {The Cumberland Ankle Instability Tool: a report of validity and reliability testing},
  abstract = {<p>
OBJECTIVE: To test the Cumberland Ankle Instability Tool (CAIT), a 9-item 30-point scale, for measuring severity of functional ankle instability. DESIGN: Cross-sectional study. SETTING: General community. PARTICIPANTS: Volunteer sample of 236 subjects. INTERVENTIONS: Not applicable. MAIN OUTCOME MEASURES: Concurrent validity by comparison with the Lower Extremity Functional Scale (LEFS) and a visual analog scale (VAS) of global perception of ankle instability by using the Spearman rho. Construct validity and internal reliability with Rasch analysis using goodness-of-fit statistics for items and subjects, separation of subjects, correlation of items to the total scale, and a Cronbach alpha equivalent. Discrimination score for functional ankle instability by maximizing the Youden index and tested for sensitivity and specificity. Test-retest reliability by intraclass correlation coefficient, model 2,1 (ICC(2,1)). RESULTS: There were significant correlations between the CAIT and LEFS (rho=.50, P&lt;.01) and VAS (rho=.76, P&lt;.01). Construct validity and internal reliability were acceptable (alpha=.83; point measure correlation for all items, &gt;0.5; item reliability index, .99). The threshold CAIT score was 27.5 (Youden index, 68.1); sensitivity was 82.9% and specificity was 74.7%. Test-retest reliability was excellent (ICC(2,1)=.96). CONCLUSIONS: CAIT is a simple, valid, and reliable tool to measure severity of functional ankle instability.
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},
  year = {2006},
  journal = {Archives of Physical Medicine and Rehabilitation},
  volume = {87},
  chapter = {1.814},
  number = {9},
  pages = {1235-1241. [Impact Factor 1.814]},
  note = {HERDC category C1},
  language = {eng},
}