The dimensionality of functional independence measure (FIM)

Abstract

This is an audit of the dimensionality of FIM referring to a Ravaud et al.1 study in which was indicated that the use of FIM scores is not justified because the assumption of unidimensionality is not given. Performing a factor analysis with our FIM assessment data we conclude that although the two-dimension solution holds for many data sets, other possibilities should be considered as changes of dimensionality are also empirical results. A search for valid instruments based on phenomenological, ecological and contextual conceptualization of independence is encouraged.