PMID: 24346565Dec 19, 2013Paper

Instrument to measure adherence in hypertensive patients: contribution of Item Response Theory

Revista de saúde pública
Malvina Thaís Pacheco RodriguesPedro Alberto Barbetta

Abstract

To analyze, by means of "Item Response Theory", an instrument to measure adherence to t treatment for hypertension. Analytical study with 406 hypertensive patients with associated complications seen in primary care in Fortaleza, CE, Northeastern Brazil, 2011 using "Item Response Theory". The stages were: dimensionality test, calibrating the items, processing data and creating a scale, analyzed using the gradual response model. A study of the dimensionality of the instrument was conducted by analyzing the polychoric correlation matrix and factor analysis of complete information. Multilog software was used to calibrate items and estimate the scores. Items relating to drug therapy are the most directly related to adherence while those relating to drug-free therapy need to be reworked because they have less psychometric information and low discrimination. The independence of items, the small number of levels in the scale and low explained variance in the adjustment of the models show the main weaknesses of the instrument analyzed. The "Item Response Theory" proved to be a relevant analysis technique because it evaluated respondents for adherence to treatment for hypertension, the level of difficulty of the items and their ability t...Continue Reading

References

Dec 19, 2006·Atencion primaria·Emilio Márquez ContrerasJacinto Espinosa García
Apr 4, 2007·Psychological Methods·R J Wirth, Michael C Edwards
Aug 2, 2008·Cadernos de saúde pública·Maria das Graças B CeccatoMark D C Guimarães
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May 12, 2012·Revista da Escola de Enfermagem da U S P·José Wicto Pereira BorgesCélida Juliana de Oliveira

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Citations

Jan 11, 2018·Revista latino-americana de enfermagem·Gisele de Lacerda Chaves VieiraHeloísa de Carvalho Torres
May 12, 2017·Revista de saúde pública·José Wicto Pereira BorgesIrialda Saboia Carvalho

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