Author/Editor		Ranker, Alexander; Gutenbrunner, Christoph; Eckhardt, Isabelle; Giordano, Andrea; Burger, Helena; Franchignoni, Franco
Title		Rasch validation and comparison of the German versions of the Locomotor Capabilities Index-5 and Prosthetic Mobility Questionnaire 2.0 in lower-limb prosthesis users
Type		članek
Vol. and No.		Letnik 44, št. 3
Publication year		2021
Volume		str. 233-240
ISSN		0342-5282 - International journal of rehabilitation research. Internationale Zeitschrift für Rehabilitationsforschung. Revue internationale de recherches de readaptation
Language		eng
Abstract		This study aimed to compare, through Rasch analysis, the psychometric properties of the Locomotor Capabilities Index (LCI-5) and Prosthetic Mobility Questionnaire (PMQ 2.0) in German lower-limb prosthesis users. The questionnaires were concurrently administered to a convenience sample of 98 consecutively recruited individuals with lower limb amputation (LLA) (male/ female = 61/37; mean age 57 % 14 years). LCI-5 showed disordered rating scale thresholds (one response option in three items required collapsing); local dependence between two items (resolved by creating a testlet); underfit of one item ('Get up from the floor'); and presence of a second weak dimension. PMQ 2.0 showed a correctly functioning rating scale; good fit of the data to the model (apart from some overfit); local dependence between two items (absorbed by creating a testlet); and essential unidimensionality. At scale co-calibration onto a common interval-scaled metric, PMQ 2.0 was better targeted than LCI-5 (i.e. the extent of item difficulty was more appropriate for the sample) and its operational range allowed a more precise measurement of higher locomotor abilities. The correlation between LCI-5 and PMQ 2.0.
Keywords		lower-limb amputation outcome assessment prosthetic mobility psychometrics rehabilitation amputacija spodnji ud ocena izida mobilnost psihometrija rehabilitacija