Conflicting findings from a rubber industry cohort study: what is the explanation?

Hidajat et al have recently published a further report1 from an updated mortality study of UK rubber workers set up in the 1970s.2 In a statistically complex analysis based on assumed job histories, Hidajat et al 1 reported positive associations for a host of cancer sites and all occupational exposures that they considered (rubber dust, rubber fume, nitrosamines). Taken at face value these …