Researchers assessed and compared the psychometric properties of two self-report questionnaires that assess mobility in people with lower-limb amputations: the Prosthesis Evaluation Questionnaire-Mobility Section (PEQ-MS) and the Prosthetic Mobility Questionnaire (PMQ 2.0). They concluded that the PMQ 2.0 had a better measurement performance and larger operational range than the PEQ-MS, making it more suitable for assessing lower-limb prosthesis users with a range of locomotor abilities, particularly those with higher mobility levels.
The research team collected data from 100 lower-limb prosthesis users and conducted a secondary Rasch analysis of data from a prospective single-group observational study. Their comparison indicated that the PMQ 2.0 showed good measurement qualities, and the PEQ-MS had acceptable psychometric properties, despite some weakness in item selection. Cocalibration of the questionnaires indicated that the assessments measure the prosthetic mobility, but PMQ 2.0 items have a wider range of difficulty.
The study, “Head-to-head Rasch comparison of the Prosthesis Evaluation Questionnaire-Mobility Section and the Prosthetic Mobility Questionnaire 2.0 in Italian lower-limb prosthesis users,” was published in Prosthetics and Orthotics International.
