VALIDATION STUDY ON THE SUBJECTIVE AND OBJECTIVE QUALITY OF LIFE OF EMPLOYEES – THE CASE OF THE REPUBLIC OF SERBIA

In this paper, the validity and reliability of the Comprehensive Quality of Life Scale-A5 (ComQoL-A5) was evaluated on a sample of 761 employees in production and service activities in the City of Niš. The research was carried out using the Cronbach α internal consistency coefficient of all components (domains) of the questionnaire scales in order to analyze the reliability of the quality of life scales. In addition, the correlation analysis assessed the interdependence between the values of individual domains within the scales for assessing the quality of life, while Spearman's rank correlation coefficient - r was calculated between the individual domains of the scales for the objective and subjective quality of life. The results of the research confirm the high reliability of the scales for assessing the subjective quality of life (0.823) in the general population of employees, while the reliability of the scale for assessing the objective quality of life is in accordance with the values of the Cronbach α coefficients in the tests of the objective quality of life in a large number of studies during the initial testing of the questionnaire by the author himself (0.39 vs. 0.49). It was confirmed that the application of a standardized generic questionnaire for quality of life (ComQoL-A5) is a suitable and reliable instrument for future research on quality of life in the general population and for the working population.