Validity and reliability of the Spanish sign language version of the KIDSCREEN-27 health-related quality of life questionnaire for use in deaf children and adolescents

Objective: The aim of this paper was to test the validity and reliability of a Spanish sign language (SSL) adaptation of KIDSCREEN-27, a health-related quality of life (HRQoL) questionnaire for use in deaf children and adolescents. Methods: We performed an observational cross-sectional study of 114 deaf children and adolescents aged 8 to 18 years old. The Spanish version of the KIDSCREEN-27 was adapted to SSL through the translation-back translation technique. The adapted questionnaire was then administered using a web tool to ensure complete access to study participants. Floor and ceiling effects were calculated. Structural and cultural validity were tested using exploratory and confirmatory factor analysis. Cronbach's a was used to assess internal consistency. The questionnaire was administered for a second time to the entire sample after 2 to 4 weeks (test-retest reliability). Results: In the SSL version of the KIDSCREEN-27, as in the original Spanish scale, five dimensions explained 59% of the variance. None of the participants obtained the minimum or maximum scores on the scale (floor and ceiling effect, respectively). Confirmatory factor analysis showed the goodness-of-fit of the factor solution with five dimensions of the SSL version. The Cronbach's a of both the total scale and of each of the distinct dimensions was above 0.75. The intra-class correlation coefficient of the test-retest scale was considered acceptable in all the dimensions. Conclusions: The reliability and validity of the SSL version of the KIDSCREEN-27 are similar to those of the original Spanish version, providing a new tool for measuring HRQoL in deaf children and adolescents (AU)

Objetivo: Evaluar la validez y la fiabilidad del cuestionario de calidad de vida relacionada con la salud KIDSCREEN-27 traducido a lengua de signos española (LSE) para niños y adolescentes sordos. Método: Estudio observacional transversal en el que participaron 114 niños y adolescentes sordos de 8 a 18 años de edad. Utilizando la técnica traducción-retrotraducción se adaptó la versión española del KIDSCREEN-27 a la LSE, y se diseñó una herramienta web para que el cuestionario fuese totalmente accesible. Se calculó el efecto suelo y el efecto techo. La validez estructural y transcultural se comprobó mediante análisis factorial exploratorio y confirmatorio. Para evaluar la consistencia interna se utilizó el coeficiente a de Cronbach. El 100% de la muestra efectuó un retest al cabo de 2-4 semanas (fiabilidad test-retest). Resultados: En la versión del KIDSCREEN-27 en LSE subyacían cinco dimensiones que explicaban el 59% de la varianza. Ningún participante obtuvo la puntuación mínima o máxima de la escala (efecto suelo y techo, respectivamente). El análisis factorial confirmatorio mostró la bondad de ajuste de la solución factorial con cinco dimensiones de la versión en LSE. El a de Cronbach tanto de la escala total como de cada dimensión fue superior a 0,75. El coeficiente de correlación intraclase del test-retest fue significativo en todas las dimensiones. Conclusiones: La versión adaptada a la LSE del KIDSCREEN-27 presentó coeficientes de fiabilidad y validez similares a los de la versión original en español, permitiendo disponer de un nuevo instrumento para medir la calidad de vida relacionada con la salud en niños y adolescentes sordos (AU)

Validity and reliability of the Spanish sign language version of the KIDSCREEN-27 health-related quality of life questionnaire for use in deaf children and adolescents.

OBJECTIVE: The aim of this paper was to test the validity and reliability of a Spanish sign language (SSL) adaptation of KIDSCREEN-27, a health-related quality of life (HRQoL) questionnaire for use in deaf children and adolescents. METHODS: We performed an observational cross-sectional study of 114 deaf children and adolescents aged 8 to 18 years old. The Spanish version of the KIDSCREEN-27 was adapted to SSL through the translation-back translation technique. The adapted questionnaire was then administered using a web tool to ensure complete access to study participants. Floor and ceiling effects were calculated. Structural and cultural validity were tested using exploratory and confirmatory factor analysis. Cronbach's α was used to assess internal consistency. The questionnaire was administered for a second time to the entire sample after 2 to 4 weeks (test-retest reliability). RESULTS: In the SSL version of the KIDSCREEN-27, as in the original Spanish scale, five dimensions explained 59% of the variance. None of the participants obtained the minimum or maximum scores on the scale (floor and ceiling effect, respectively). Confirmatory factor analysis showed the goodness-of-fit of the factor solution with five dimensions of the SSL version. The Cronbach's α of both the total scale and of each of the distinct dimensions was above 0.75. The intra-class correlation coefficient of the test-retest scale was considered acceptable in all the dimensions. CONCLUSIONS: The reliability and validity of the SSL version of the KIDSCREEN-27 are similar to those of the original Spanish version, providing a new tool for measuring HRQoL in deaf children and adolescents.

Barriers, facilitators and preferences for the physical activity of school children. Rationale and methods of a mixed study.

BACKGROUND: Physical activity interventions in schools environment seem to have shown some effectiveness in the control of the current obesity epidemic in children. However the complexity of behaviors and the diversity of influences related to this problem suggest that we urgently need new lines of insight about how to support comprehensive population strategies of intervention. The aim of this study was to know the perceptions of the children from Cuenca, about their environmental barriers, facilitators and preferences for physical activity. METHODS/DESIGN: We used a mixed-method design by combining two qualitative methods (analysis of individual drawings and focus groups) together with the quantitative measurement of physical activity through accelerometers, in a theoretical sample of 121 children aged 9 and 11 years of schools in the province of Cuenca, Spain. CONCLUSIONS: Mixed-method study is an appropriate strategy to know the perceptions of children about barriers and facilitators for physical activity, using both qualitative methods for a deeply understanding of their points of view, and quantitative methods for triangulate the discourse of participants with empirical data. We consider that this is an innovative approach that could provide knowledges for the development of more effective interventions to prevent childhood overweight.