Self-reported Occupational Exposures Relevant for Cancer among 28,000 Offshore Oil Industry Workers Employed between 1965 and 1999

The objective of this study was to examine self-reported frequency of occupational exposure reported by 28,000 Norwegian offshore oil workers in a 1998 survey. Predictors of self-reported exposure frequency were identified to aid future refinements of an expert-based job-exposure-time matrix (JEM). The authors focused on reported frequencies for skin contact with oil and diesel, exposure to oil vapour from shaker, to exhaust fumes, vapour from mixing chemicals used for drilling, natural gas, chemicals used for water injection and processing, and to solvent vapour. Exposure frequency was reported by participants as the exposed proportion of the work shift, defined by six categories, in their current or last position offshore (between 1965 and 1999). Binary Poisson regression models with robust variance were used to examine the probabilities of reporting frequent exposure (?¼ vs. <¼ of work shift) according to main activity, time period, supervisory position, type of company, type of installation, work schedule, and education. Holding a non-supervisory position, working shifts, being employed in the early period of the offshore industry, and having only compulsory education increased the probability of reporting frequent exposure. The identified predictors and group-level patterns may aid future refinement of the JEM previously developed for the present cohort. Authors: Stenehjem JS, Friesen MC, Eggen T, Kjærheim K, Bråtveit M, Grimsrud TK. ;Full Source: Journal of Occupational & Environmental Hygiene. 2015 Feb 11:0. [Epub ahead of print] ;