Morbidity patterns among heavy equipment operators exposed to whole-body vibration-1975 (Followup to a 1974 Study).
Spear-RC; Keller-C; Behrens-V; Hudes-M; Tarter-D
NIOSH 1976 Nov; :1-53
This follow up study is designed to test the extent to which selection out of jobs proving whole body vibration exposure could account for the previously observed decreases in claims for the following major diseases among the longest exposed workers: ischemic heart disease, metabolic diseases, bone and joint diseases and male genital diseases. Approximately 1376 work histories are analyzed for workers in the construction industry from December, 1972 to December, 1974 with emphasis on comparison between jobs involving exposure versus no exposure to whole body vibration. The effects of age and work experience are controlled. Evidence is found of an increased risk of leaving the construction industry for workers who have experienced disease. Although there is no significant association between the number of workers leaving vibrated jobs and the number leaving nonvibrated jobs, there was an association, not statistically significant, between the number with claims for ischemic heart disease and bone and joint diseases and the number leaving vibrated jobs. It is concluded that differential selection probably influenced the results for some diseases in the previous 1974 study, but it is unlikely to have accounted for the unusual frequency of a pattern of increasing then decreasing morbidity versus work experience. It is suggested that there may be some disease conditions whose onset is hastened by exposure to whole body vibration but whose overall incidence differs little between exposed and unexposed workers in the construction industry. (Contract No 210-75-0022)
NIOSH-Contract; Contract-210-75-0022; Cardiovascular-system-disorders; Metabolic-disorders; Musculoskeletal-system-disorders; Bone-disorders; Reproductive-system-disorders; Vibration-disease; Construction-workers; Hazards; Construction-Search
Final Contract Report
Division of Laboratories and Criteria Development, NIOSH, Cincinnati, Ohio