Continued validation and known groups validity of the Quick-FAAM: Inclusion of participants with chronic ankle instability and ankle sprain copers

Objective: To examine the factor structure and validity of the Quick-FAAM in individuals with chronic ankle instability (CAI) and those classified as ankle sprain copers (ASC). Design: Cross-sectional. Setting: Laboratory. Participants: Adult participants were included in both groups based on previously established criteria. Main outcome measure(s): The 12-item Quick-FAAM is scored on a 5-point Likert scale were scores are converted to a percentage (0–100%), and greater scores indicate greater function. The Cumberland Ankle Instability Tool (CAIT) is a 9-item scale used to assess impairments in individuals with a history of ankle sprain. Scores range from 0 to 30, and greater scores indicate greater impairment levels. Confirmatory factory analyses, internal consistency, and concurrent validity were determined. Known-groups validity and differences in scores between groups were examined. Alpha was set at p < 0.05. Results: The instruments were strongly correlated (r = 0.76, p < 0.001), the Quick-FAAM internal consistency remained high (α = 0.94) and the single factor was confirmed. The cutoff score differentiating between the groups was 94.79%. Conclusions: The Quick-FAAM is a valid, shortened version of the FAAM. It also has the ability to discriminate between individuals with CAI and those classified as ASC. The Quick-FAAM should be considered for future use with individuals who have ankle sprain history.