extended · article · 2010

The Falls Efficacy Scale International (FES-I). A comprehensive longitudinal validation study

Kim Delbaere; Jacqueline Close; A. Stefanie Mikolaizak; Perminder S. Sachdev; Henry Brodaty; Stephen R. Lord; John M. Linacre

OBJECTIVE: this study aimed to perform a comprehensive validation of the 16-item and 7-item Falls Efficacy Scale International (FES-I) by investigating the overall structure and measurement properties, convergent and predictive validity and responsiveness to change. METHOD: five hundred community-dwelling older people (70-90 years) were assessed on the FES-I in conjunction with demographic, physiological and neuropsychological measures at baseline and at 12 months. Falls were monitored monthly and fear of falling every 3 months. RESULTS: the overall structure and measurement properties of both FES-I scales, as evaluated with item response theory, were good. Discriminative ability on physiological and neuropsychological measures indicated excellent validity, both at baseline (n = 500, convergent validity) and at 1-year follow-up (n = 463, predictive validity). The longitudinal follow-up s...