Abstract:
:This study aimed to assess the dimensional structure and internal consistency of the Brazilian version of the Functional Activities Questionnaire (FAQ-BR) for measurement of functional capacity in the elderly, based on the informant's report. This was a cross-sectional study with 525 non-institutionalized elderly informants, in which confirmatory factor analyses (CFA) and exploratory/confirmatory factor analyses (E/CFA) modeled according to CFA principles were used to identify the most parsimonious model and that with the best fit. The internal consistency of the FAQ-BR was assessed by composite reliability, and correlations between its dimensions were examined to investigate discriminant factor validity. CFA did not corroborate the unidimensional structure as originally proposed. Next, E/CFA fit a bidimensional structure that was reassessed by CFA, displaying a model without cross loads as the most parsimonious and with adequate fit indices. The internal consistency of FAQ-BR was considered satisfactory, and the correlation between its dimensions was acceptable. These findings are important, since they demonstrate the scale's capacity to capture the elderly's functional capacity construct in a different sociocultural context from that in which it was originally developed. The FAQ-BR can thus be considered an appropriate bidimensional instrument for measuring the elderly's functional capacity based on the informant's report, and its use in studies with similar populations is recommended. :Este estudo teve por objetivo avaliar a estrutura dimensional e a consistência interna da versão brasileira do Functional Activities Questionnaire (FAQ-BR) para aferição da capacidade funcional do idoso, com base no relato de informante. Trata-se de um estudo seccional desenvolvido com 525 informantes de idosos não institucionalizados, em que análises fatoriais confirmatórias (AFC) e análises fatoriais exploratórias (AFC/E), modeladas segundo os princípios da AFC, foram usadas para identificar o modelo mais parcimonioso e mais bem ajustado. A consistência interna do FAQ-BR foi avaliada pela confiabilidade composta, e correlações entre suas dimensões foram examinadas a fim de investigar validade fatorial discriminante. A AFC não corroborou a estrutura unidimensional originalmente proposta. Em seguida, a AFC/E ajustou uma estrutura bidimensional que foi reavaliada por AFC, evidenciando um modelo sem cargas cruzadas como o mais parcimonioso e com adequados índices de ajuste. A consistência interna do FAQ-BR foi considerada satisfatória, e a correlação entre suas dimensões, aceitável. Esses achados são importantes, pois revelam a capacidade de a escala capturar o construto capacidade funcional do idoso em um contexto sociocultural distinto daquele em que foi desenvolvido. Portanto, o FAQ-BR pode ser considerado um instrumento bidimensional apropriado para aferir a capacidade funcional do idoso com base no relato do informante, e seu uso em pesquisas com populações semelhantes é recomendado. :El objetivo de este artículo fue evaluar la estructura dimensional y la consistencia interna de la versión brasileña del Functional Activities Questionnaire (FAQ-BR) para la valoración de la capacidad funcional del anciano, en base al relato del informante. Se trata de un estudio seccional, desarrollado con 525 informantes de ancianos no institucionalizados, donde los análisis factoriales confirmatorios (AFC) y análisis factoriales exploratorios (AFC/E), fueron modelados según los principios de la AFC, así como usados para identificar el modelo más parsimonioso y más bien ajustado. La consistencia interna del FAQ-BR se evaluó por la fiabilidad compuesta, y se examinaron las correlaciones entre sus dimensiones, a fin de investigar la validez factorial discriminante. La AFC no corroboró la estructura unidimensional originalmente propuesta. En seguida, la AFC/E ajustó una estructura bidimensional que se reevaluó por parte de la AFC, evidenciando un modelo sin cargas cruzadas como el más parsimonioso y con adecuados índices de ajuste. La consistencia interna del FAQ-BR se consideró satisfactoria, y la correlación entre sus dimensiones, aceptable. Estos hallazgos son importantes, pues revelan la capacidad de la escala de aprehender el constructo capacidad funcional del anciano en un contexto sociocultural distinto de aquel en el que se desarrolló. Por ello, el FAQ-BR puede ser considerado un instrumento bidimensional, apropiado para evaluar la capacidad funcional anciano, basándose en el relato del informante, y se recomienda su uso en investigaciones con poblaciones semejantes.
journal_name
Cad Saude Publicajournal_title
Cadernos de saude publicaauthors
Jomar RT,Lourenço RA,Lopes CSdoi
10.1590/0102-311X00209917subject
Has Abstractpub_date
2018-11-08 00:00:00pages
e00209917issue
11eissn
0102-311Xissn
1678-4464pii
S0102-311X2018001104001journal_volume
34pub_type
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