| Autor: |
Diego Fernando Rojas-Gualdrón, Jessica María Ayala-Hernández, Doris Cardona-Arango, Angela María Segura-Cardona, María Osley Garzón-Duque |
| Jazyk: |
Spanish; Castilian |
| Rok vydání: |
2019 |
| Předmět: |
|
| Zdroj: |
Revista Facultad Nacional de Salud Pública, Vol 37, Iss 2, Pp 89-95 (2019) |
| Druh dokumentu: |
article |
| ISSN: |
0120-386X |
| DOI: |
10.17533/udea.rfnsp.v37n2a10 |
| Popis: |
Improving Katz index interpretability contributes to a better understanding of its results facilitating decision making and intervention planning. Objective: To evaluate the validity of the Katz geriatric scale in senior citizens from a Rasch model perspective. Methodology: Secondary data analysis of a population-based, cross-sectional study of health status in 4,023 senior citizens conducted in Antioquia, Colombia, in 2012. Item fit, differential item functioning, unidimensionality, reliability and item-person map analyses were performed. Results: All items adjusted to the model. Transferring and Continence showed high differential item functioning with a considerable, but statistically non-significant impact on the overall estimation. Person and Item reliability were 0.80 and 0.90 respectively. The Rasch measurement explained 61.6% of variance. Conclusion: A unidimensional interval level measure can be obtained from the Katz instrument. It is important to do more research on differential functioning of Katz’s items in a way in which validity arguments on its generalization to various subpopulations could be strengthened and score interpretability could be improved. |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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