[Data processing computer system for evaluation of health effects due to occupational diseases diagnosed in Poland]

General consequences of occupational diseases for both employees and the country's economy have been known for many decades. Nevertheless there were no legal instruments and financial means to carry out studies leading to a comprehensive evaluation of health effects induced by occupational diseases diagnosed in Poland. Only recently, the legal basis has been provided by the revision of the regulations on occupational diseases (Official Journal of the Ministry of Health and Social Welfare no 9, heading 51, 1989), and the financial means allocated according to the Governmental Strategic Programme (SPR-1) for the years 1995-1998. The objectives of the study and the results obtained have been presented in another publication. Here the authors concentrated on some aspects of data collection and their analysis. An essential element in the establishment of data base on health effects of occupational diseases was its integration, namely the number of diagnosed occupational disease had to correspond with the entity in the Register of Occupational Diseases. Such an approach helped to avoid including in the base all metrical data, as information on effects of occupational diseases was collected exclusively for persons with detected and diagnosed occupational disease, which had to be previously placed in the Register of Occupational Diseases. The correctness of data input and the data analysis were carried out outside the Paradox system. The analysis of histograms of characteristics under study and the explanation of departing values were employed to evaluate the freedom from bias, and the statistical package for social sciences (SPSS) was used to analyse the data.