|Document ID (ISN)||111898|
|ISSN - Serial title
||1351-0711 - Occupational and Environmental Medicine
|Convention or series no.
||A prospective cohort study of exposure-response relationship for vibration-induced white finger
||Jan. 2010, vol.67, No.1, p.38-46. Illus. 27 ref.
||The objective of this study was to investigate prospectively the relation between vibration-induced white finger (VWF) and measures of cumulative (lifetime) exposure to hand-transmitted vibration (HTV). Two hundred and forty-nine HTV workers and 138 control men of the same companies participated in a three-year follow-up study. The diagnosis of VWF (Raynaud's phenomenon in the controls) was based on the medical history, the administration of colour charts and the results of a cold test. Tool vibration magnitudes were expressed as root-mean-square acceleration, frequency-weighted according to international standard ISO 5349-1 and also unweighted over the frequency range 6.3-1250 Hz. From the vibration magnitudes and exposure durations, alternative measures of cumulative vibration dose were calculated for each HTV worker. The incidence of VWF varied from 5 to 6% in the HTV workers versus 0 to 1.5% in the controls. After adjusting for potential confounders, measures of cumulative vibration dose derived from total operating hours and high powers of unweighted acceleration gave better predictions of the occurrence of VWF than dose measures calculated from frequency-weighted acceleration. These findings were observed in the entire sample of HTV workers, in those with no VWF at the initial investigation, and in those with normal cold test results at baseline. Implications of these findings are discussed.
||Italy; hand tools; vibrating tools; Raynaud's phenomenon; risk factors
||marble; stone dressing; cohort study; statistical evaluation; forestry; length of exposure
||D - Periodical articles
Agriculture, fishing, animal husbandry
Mines and quarries
Noise, hearing and vibration
|Broad subject area(s)
||Occupational medicine, epidemiology
Forestry and logging
Mining and quarrying
Diseases of the nervous system