[Prognostication on the development of vibration disease in laborers using manual machines]

Prognosing of vibration disease (VD) is normally made both with regard to the number of the VD cases depending on the duration of work in vibration-hazardous professions, and with respect to its latent period. The results of prognosing depend to a vast extent on the methodological principles and criteria used. The data obtained from an epidemiological survey helped to determine quantitatively the interdependence between the vibration dosage and the VD latent period calculation on the average working day dosage basis. It was also shown that in case with marked high frequency and low frequency vibrations, as well as in combinations of vibration with other industrial factors, the calculated VD period can be shortened or prolonged) by 1-3 years. Further improvement of the VD prognosing techniques should be based on the evaluation of group and individual risk-factors criteria.