Comparision of EQ-5D and FACT-G scales in the evaluation of quality of life in Colombian Cancer Patients/Comparación de las escalas EQ-5D y FACT-G en la evaluación de la calidad de vida en pacientes colombianos con cáncer/Comparacao das escalas EQ-5D e FACT-G na avaliacao da qualidade de vida em pacientes colombianos com cancer

Objective: To evaluate patterns of correlations between the different dimensions of a scale measuring quality of life (FACT-G) and one that measures perceived health and quality of life (EQ-5D) in cancer patients. Methods: A descriptive study that evaluated 114 patients with confirmed cancer of breast (40=35.09%), gastric (26=22.8%), prostate (22=19.3%), colon-rectal (17=14.91%). Diagnosis was made at the National Cancer Institute of Colombia, to whom applied the FACT-0 and EQ-5D scale. Descriptive analyses were used to summarize the variables, methods of multivariate analysis, factor analysis and multidimensional scaling were used to assess patterns of correlation between the variables of each of the two scales used. Results: The dimensions that showed acceptable correlation values were physical well-being and emotional well-being of the FACT-0 with anxiety and depression of the EQ- 5D scale. Factor analysis yielded two factors: (a) anxiety / depression or the EQ-5D is better grouped with the components of the FACT- 0, and (b) physical symptoms of FACT-0 with the components of the EQ-5D. Multidimensional scaling analysis suggested that each scale measured different dimensions of the construct quality of life. Conclusion: The FACT-0 is oriented to emotional and social interaction, while the EQ-5D is oriented to aspects of physical and functionality. Keywords: quality life; EQ-5D; FACT-G; cancer. Objetivo: Evaluar patrones de correlaciones entre las diferentes dimensiones de una escala que mide la calidad de vida (FACT-G) y otra que mide la salud autopercibida y la calidad de vida (EQ-5D) en pacientes con cancer. Material y metodos: Estudio descriptivo que evaluo a 114 pacientes con cancer de mama (40 = 35.09%), gastrico (26 = 22.8%), prostata (22 = 19.3%), recto (17 = 14.91%), a quienes se les aplico las escalas FACT-G y EQ-5D. Se utilizaron tecnicas de estadistica descriptiva para resumir variables, metodos de analisis multivariado, analisis factorial y escalamiento multidimensional. Resultados: Las dimensiones que mostraron valores de correlacion aceptable fueron bienestar fisico y emocional de la FACT-G con angustia y depresion de la escala EQ-5D. El analisis factorial arrojo dos factores: (a) angustia/depresion de la EQ-5D, que se agrupa mejor con los componentes de la FACT-G, y (b) sintomas fisicos con los componentes de la EQ-5D. El escalamiento multidimensional sugirio que cada escala midio dimensiones diferentes del constructo calidad de vida. Conc