Validation of an instrument for evaluating health care services to ostomized people

Objectives: to develop and validate an array of analysis and judgment for the evaluation of Health Care Services of people with stomas. Metodo: estudo seccional em 28 unidades de saude do estado de Minas Gerais. Foi realizada uma analise descritiva do instrumento e um estudo das suas propriedades psicometricas. Para a validacao de conteudo e de aparencia foi utilizada a tecnica Delphi. A analise psicometrica foi realizada por meio do estudo da confiabilidade e validade das medidas obtidas com o instrumento. Results: it was possible to construct an array analysis and judgment with 16 components (with scores from zero to five) grouped according to size and structure and process considered essential to evaluate the service. The results achieved in the reliability for structure and process, through the Cronbach alpha coefficient (α = 0.771 and α = 0.809, respectively), and the validity of content and construct demonstrated good internal consistency and satisfactory validity. An exploratory factor analysis indicated the item "main activity performed in the unit" as a limitation of the scale. Conclusion: the study provides a new tool for the evaluation of structure and process of Health Care Services of a Person with a stoma.