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Figure 1 | Journal of Occupational Medicine and Toxicology

Figure 1

From: Methods to recognize work-related cancer in workplaces, the general population, and by experts in the clinic, a Norwegian experience

Figure 1

Identify doubling of the risk for lung cancer. Insurance schemes and companies in some countries apply the notion "doubling of the risk" of a given case of exposure-related cancer as criterion to compensate work-related cancers. Any population may comprise a number of subpopulations with cancer risk related to a number of exposure factors as illustrated. As illustrated, a study may have identified just in excess of doubling of the lung cancer risk in a small sub-population of those exposed to nickel compounds when referring to the age-adjusted general male population. Had the archaic risk, here presumed to be at 0,2 compared to 1,0 for the general population, the relative risk (RR) in the same sub-population of the nickel-exposed would have been at more than 10,0 in the reference level. Which background risk should serve as reference for "doubling"?.

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