Situacoes incomodas no trabalho: confiabilidade de uma escala de medida utilizando o coeficiente alfa ordinal

Abstract

The study and care about the working environment and its influence on health-disease process of workers is not new. Throughout the development of society, the risk factors related to worker's health was suffering with changes being incorporated into new determinants. In this context we developed this work is to study the reliability of a range of uncomfortable situations at work, using a new methodology called Ordinal Coefficient Alpha. The scale of the instrument was extracted mentioned "Work and Health Survey" - INSAT, originally developed in Portugal and linguistically adapted to Brazil, becoming known as BR-INSATS. This scale is also inserted into the instrument to be used in a prospective cohort study entitled "I Survey on Conditions of Work and Life of Technical Administrators in Education, Federal University of Juiz de Fora." That consists of eighteen questions and was tested and retested in one hundred and three contract workers, in a public university located in the State of Minas Gerais. Reliability was estimated by using the coefficients of internal consistency Alpha and Omega Ordinal McDonald, with results of 0.94 and 0.96 respectively. And by the reproducibility of the method of Test Retest by Kappa coefficient analysis of which showed correlation between the items of the test and retest ranged from 0.36 to 0.63, with mean Kappa of 0.49. Evidence that the INSATS -BR Uncomfortable Scale is reliable and can be used in other studies.