ICF based amputee mobility scale development, validity and reliability

The aim of the study was to develop the ICF-Based Amputee Mobility Scale (IBAMS) and to investigate its validity and reliability. The scale was developed with the 2-round Delphi method. The questions of the scale were prepared by considering the International Classification of Functioning Disability and Health. It was decided to include the draft questions in the scale in line with the opinions of different professionals working in the field of prosthetics. IBAMS was statistically significant with a Content Validity Index of 0.94. Test-retest reliability and convergent validity of IBAMS were determined on 70 patients (47 transtibial, 18 transfemoral, 5 Syme). When the results of the scale applied to the participants were analyzed, the construct validity of the 16 questions evaluating the different functional levels of the scale was ensured. The internal consistency of the items of ITAMÖ was high with a Cronbach's Alpha coefficient of 0.93. The scale had excellent test-retest reliability with an Inclass Correlation Coefficient of 0.99. For convergent validity, the correlations between IBAMS score, Locomotor Capacity Index (LCI), Amputee Mobility Predictor (AMG), Rivermead Mobility Index (RMI), 2-Minute Walk Test (2MWT) and Timed Get Up and Go Test (TUG) data were analyzed. With IBAMS, LCI (r=-0.75) is negative excellent, 2MWT (r=-0.60), RMI (r=-0.64), AMG (r=-54) negative good, and TUG (r) =0.51), good positive correlation was found. With these results, it was determined that the IBAMS, which was developed within the scope of our study, is a suitable scale for evaluating the mobility of lower extremity amputees and for repeated measurements. It was seen that ITAMÖ will guide those working in the field of prosthesis at the point of deciding on rehabilitation and prosthesis applications, as well as showing the improvement in the mobility level of the patient. In addition, it is thought that this scale is easy to apply and low cost, and it is a suitable scale to evaluate amputees with low functional level as well as amputees with high functional level.