Development
To devise the questionnaire, the CAIT, we first identified
questions used in previous studies on ankle injury8-13 and also
derived questions from focus group interviews with people
with chronic instability.
From these sources, a 12-item questionnaire
(CAIT 1) was devised and administered to a pilot
group of subjects (N18 subjects, resulting in 36 responses,
one for each leg) with a mix of uninjured, sprained, and
unstable ankles. For each item, a range of 4 or 5 responses was
possible, representing an increasing level of difficulty for the
activity concerned. Scores were assigned based on the rank of
the chosen response and summated to generate a total score.