[Study of the changes in the morbidity and disease incidence patterns based on the absenteeism data analyzed during the 20-year period].

The aim of the study was to determine which of the absenteeism parameters was responsible for the changes in absenteeism rate in the period between 1967 and 1987 and to detect the major reasons of sick absenteeism over the period. The study was carried on in an electronic plant. Changes in the sick absenteeism rate in this plant reflect general variations in morbidity and disease incidence during these years. The changes result mainly from an extremely fast growth of absenteeism rate caused by circulatory and musculoskeletal system diseases and from a constant level of absenteeism rate observed as a result of digestive system diseases. Overall, the analysis showed that the duration of individual cases of absenteeism grew with time, the process which resulted in higher absenteeism among workers suffering from circulatory and musculoskeletal system diseases, chronic gastric and duodenal ulcer diseases, hepatopathies, gallbladder diseases, +pancreatic diseases and from pregnancy, delivery and puerperium complications. This growing duration of absenteeism cases may be related to the intensity of the observed pathologies, to complications and to effectiveness of medical treatment.