Escala observacional de la marcha del sujeto con amputación de la extremidad inferior: diseño y validez de contenido / Observational gait scale for persons with lower extremity amputation. Design and content validity

INTRODUCCIÓN: El patrón de la marcha se ve alterado en los sujetos con amputación de la extremidad inferior. Para su evaluación es importante el uso de escalas de observación de la marcha con una buena validez de contenido. OBJETIVOS: Diseñar una escala de observación de la marcha atendiendo a las principales alteraciones de la marcha de los sujetos con amputación y analizar su validez de contenido. MATERIAL Y MÉTODOS: Para obtener una versión de la escala se conformó un comité de expertos. El mismo comité se ocupó de la evaluación de la escala. Se calculó el índice de validez de contenido (IVC), tanto para cada ítem como para la escala global. RESULTADOS: Se seleccionaron las principales alteraciones cinemáticas y espaciotemporales para el desarrollo de los ítems. La escala se compone de 2secciones y 25 ítems, con una puntuación máxima de 35 puntos. Se obtuvo una puntuación global IVC de 0,90, y un índice de validez para la mayoría de los ítems con valores superiores a 0,78. CONCLUSIÓN: La Escala observacional de la marcha del sujeto con amputación de la extremidad inferior ha mostrado una validez de contenido excelente de acuerdo con el IVC obtenido. Futuros estudios deben evaluar su fiabilidad y validez de constructo

INTRODUCTION: Gait pattern is altered in persons with lower extremity amputation. To assess gait pattern, it is important to use observational gait scales with a good content validity. OBJECTIVES: To design an observational gait scale and to analyze its content validity. MATERIAL AND METHODS: An expert committee was formed to obtain a version of the scale. The same committee was responsible for evaluating the scale. The content validity index (CVI) was calculated, both for each item and for the global scale. RESULTS: The main kinematic and spatiotemporal alterations were selected to design the items. The scale consists of 2sections and 25 items, with a maximum score of 35 points. An overall CVI score of 0.90 was obtained, and an index of validity for most items with values higher than 0.78. CONCLUSION: The Observational gait scale for persons with amputation of the lower extremity showed excellent content validity according to the CVI obtained. Future studies should evaluate its reliability and construct validity

[Observational gait scale for persons with lower extremity amputation. Design and content validity]. / Escala observacional de la marcha del sujeto con amputación de la extremidad inferior: diseño y validez de contenido.

INTRODUCTION: Gait pattern is altered in persons with lower extremity amputation. To assess gait pattern, it is important to use observational gait scales with a good content validity. OBJECTIVES: To design an observational gait scale and to analyze its content validity. MATERIAL AND METHODS: An expert committee was formed to obtain a version of the scale. The same committee was responsible for evaluating the scale. The content validity index (CVI) was calculated, both for each item and for the global scale. RESULTS: The main kinematic and spatiotemporal alterations were selected to design the items. The scale consists of 2sections and 25 items, with a maximum score of 35 points. An overall CVI score of 0.90 was obtained, and an index of validity for most items with values higher than 0.78. CONCLUSION: The Observational gait scale for persons with amputation of the lower extremity showed excellent content validity according to the CVI obtained. Future studies should evaluate its reliability and construct validity.