2026-07-21T14:27:04Zhttps://repisalud.isciii.es/rest/oai/request

oai:repisalud.isciii.es:20.500.12105/58772025-06-19T12:33:35Zcom_20.500.12105_2052com_20.500.12105_2051col_20.500.12105_19608col_20.500.12105_19613

00925njm 22002777a 4500 dc Martínez-Martín, Pablo author Fernández-Mayoralas, Gloria author Frades-Payo, Belen author Rojo Pérez, Fermina author Petidier, Roberto author Rodríguez-Rodríguez, Vicente author Forjaz, Maria João author Prieto-Flores, María Eugenia author Pedro-Cuesta, Jesus de author 2009-01 OBJECTIVE: To assess the psychometric quality of an instrument designed to measure functional independence (Functional Independence Scale [FIS]) in several activities of daily living domains and to be applied by trained non-health-related interviewers. The study was carried out in the autonomous region of Madrid in community-dwelling elders. METHODS: We performed a cross-sectional validation study. In addition to the FIS, Pfeiffer's questionnaire, the Depression Subscale of the Hospital Anxiety and Depression Scale, the Comorbidity Index, the Barthel Index, and EQ-5D were used. These measures were cross-sectionally applied to community-dwelling elders (n=500) and outpatients in a general hospital (n=100) aged 65 years. The following FIS psychometric attributes were analyzed: acceptability, scaling assumptions, internal consistency, construct validity, and precision. RESULTS: A fully computable FIS total score was obtained in 94.3% of the subjects. A ceiling effect (60.65%), but no floor effect (0.22%) was evident in the community-dwelling elders. No floor or ceiling effects were detected in the hospital sample. Scaling assumptions and internal consistency were satisfactory (item-total correlations: 0.57-0.91; Cronbach's alpha: 0.94). Factor analysis identified three factors that explained 74.3% of the variance. Indexes of convergent, internal, and known-groups validity were satisfactory. The scale's precision, determined by the standard error of measurement (2.49; 95%CI=4.88), was also satisfactory. CONCLUSION: The FIS is an easy-to-use instrument with appropriate metric attributes. This scale can be usefully applied in broad samples of non-institutionalized elders by non-health related personnel. Gac Sanit. 2009;23(1):49-54 10.1016/j.gaceta.2008.06.007 0213-9111 Gaceta sanitaria 19231723 http://hdl.handle.net/20.500.12105/5877 Validación de la Escala de Independencia Funcional