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espanolObjetivo Traduccion, transculturizacion y validez del cuestionario autoadministrado para funcionalidad (Systemic Sclerosis Questionnaire [SySQ]) en esclerosis sistemica al idioma espanol y su relacion con la enfermedad y la calidad de vida. Pacientes y metodos Estudio observacional analitico. Validacion realizada por panel de expertos, en apariencia y contenido. La metodologia incluyo: a) adaptacion al espanol del constructo por traduccion, retrotraduccion, y transculturizacion; b) consistencia interna para todas y cada una de las categorias del SySQ (alfa de Cronbach), y c) la reproducibilidad se evaluo tomando en cuenta todas las ocasiones en que se realizo la prueba con kappa de Cohen. Adicionalmente calculamos el coeficiente de correlacion de Spearman con: 1) escala de severidad de Medsger; 2) Health Assessment Questionnaire, y 3) prueba SF-36. Resultados Se incluyeron 70 pacientes con esclerosis sistemica, edad 17-78 (51 ± 12) anos, 65 (93%) mujeres, subtipo difuso/limitado 64/36%, evolucion de la enfermedad 0,5-40 anos. Observamos consistencia interna optima de la version final del SySQ (alfa de Cronbach 0,961) y buena reproducibilidad intraobservador entre pruebas con intervalo de 2 semanas (kappa de Cohen 0,618) y optima interobservador el mismo dia (kappa de Cohen 0,911). Moderada correlacion entre los cuestionarios de funcionalidad SySQ y de discapacidad de Health Assessment Questionnaire (r = 0,573; p Conclusiones Esta version en espanol del cuestionario autoadministrado SySQ es un instrumento valido para evaluar el estado funcional de pacientes con esclerosis sistemica. La menor funcionalidad esta relacionada con una mayor afeccion a tendon y vascular periferico y con una menor calidad de vida. EnglishObjective Translation, transculturation and validity of the self-administered questionnaire for functionality (Systemic Sclerosis Questionnaires [SySQ]) for use in Spanish patients with systemic sclerosis and its relationship to the severity of the disease and to quality of life. Patients and methods We conducted an observational analytical study to perform a cross-cultural validation of the self-administered questionnaire on functionality in scleroderma. The validity of the form and content was evaluated by an expert panel. The method included: a) adaptation into Spanish of the construct for translation and back translation, and transculturation; b) internal consistency with the SySQ (Cronbach's alpha), and c) reproducibility was assessed taking into account all occasions in which the test was performed with Cohen's kappa. Additionally, we calculated the Spearman correlation coefficient with the Medsger severity scale, Health Assessment Questionnaire score and SF-36 score. Results We included 70 patients with systemic sclerosis: age 17-78 (51 ± 12) years, 65 (93%) were women, diffuse/limited subtype 64/36%, disease duration of 0.5-40 years. Optimal internal consistency for all categories of the final version of SySQ (Cronbach's α of 0.961) and intraobserver reliability in 2 tests over a 2-week interval (Cohen's kappa coefficient 0.618) and optimal interobserver reliability in 2 tests on the same day (Cohen's kappa coefficient 0.911). Moderate correlation between functionality by SySQ and by Health Assessment Questionnaire (r = 0.573, P Conclusions SySQ in this validated Spanish version is a suitable instrument to measure functional status in patients with systemic sclerosis. Reduced functionality is related to greater tendon and peripheral vascular involvement and to a poorer quality of life.

Translation, transculturation and validity of the self-administered questionnaire for functionality (Systemic Sclerosis Questionnaires [SySQ]) for use in Spanish patients with systemic sclerosis and its relationship to the severity of the disease and to quality of life.We conducted an observational analytical study to perform a cross-cultural validation of the self-administered questionnaire on functionality in scleroderma. The validity of the form and content was evaluated by an expert panel. The method included: a) adaptation into Spanish of the construct for translation and back translation, and transculturation; b) internal consistency with the SySQ (Cronbach's alpha), and c) reproducibility was assessed taking into account all occasions in which the test was performed with Cohen's kappa. Additionally, we calculated the Spearman correlation coefficient with the Medsger severity scale, Health Assessment Questionnaire score and SF-36 score.We included 70 patients with systemic sclerosis: age 17-78 (51±12) years, 65 (93%) were women, diffuse/limited subtype 64/36%, disease duration of 0.5-40 years. Optimal internal consistency for all categories of the final version of SySQ (Cronbach's α of 0.961) and intraobserver reliability in 2 tests over a 2-week interval (Cohen's kappa coefficient 0.618) and optimal interobserver reliability in 2 tests on the same day (Cohen's kappa coefficient 0.911). Moderate correlation between functionality by SySQ and by Health Assessment Questionnaire (r=0.573, P.0001). Inverse correlation between SySQ and quality of life mental health domain SF-36 (r=-0.435, P.001) and physical domain SF-36 (r=-0.638, P.001). Medsger severity scale (tendon, heart, lung, vascular) also showed significant correlation with SySQ.SySQ in this validated Spanish version is a suitable instrument to measure functional status in patients with systemic sclerosis. Reduced functionality is related to greater tendon and peripheral vascular involvement and to a poorer quality of life.