2009; Frick et al. 2003). The goals of this study are to describe the exposure–response relationships for skin symptoms in both bakery workers and auto body shop workers, and to investigate the association between skin and respiratory symptoms in these two groups. Methods Reports on respiratory outcomes in both the bakery and auto body shop workers studies have been published previously (Pronk

et al. 2007; Jacobs et al. 2008). Workers were asked to complete a questionnaire on respiratory and skin symptoms, an exposure questionnaire, and also to provide a blood sample for analysis. For this analysis, subjects were required to have complete data for both respiratory and skin symptoms, as well as atopy and workplace allergen-specific IgE. In total, 723 bakery workers and 472 SC75741 auto

body shop workers were included in this analysis, Emricasan research buy which is a slightly different study population than previous publications (Pronk et al. 2007; Jacobs et al. 2008). Exposure In both groups (bakery and auto body shop workers), exposure was estimated based on existing data sets of personal airborne exposure measurements (Pronk et al. 2006a; Meijster et al. 2007). Cumulative monthly hexamethylene diisocyanate (HDI) exposure was estimated using task-based measurements of airborne diisocyanates combined with self-reported monthly frequencies of task completion as was described previously (Pronk et al. 2007). This exposure metric was then divided by the self-reported average number of hours worked per month to determine the long-term average isocyanate exposure of these workers (μg-NCO*m−3) that facilitated comparison with the bakery workers. Average wheat exposure for bakery workers was estimated using subjects’ work characteristics (exposure determinants) reported on the questionnaire combined with an exposure model constructed by Meijster et al. (2007), to predict average wheat exposures (μg-dust*m−3) for each subject. A relatively small number of task-based skin exposure measurements were

available for isocyanate exposure in auto body shops, but no comparable Florfenicol exposure measurements were available in bakery workers. As a result, this study investigates the exposure–response relationships for skin symptoms, using airborne exposure as a proxy for skin exposure in both working populations. In auto body shop workers, airborne exposure was not significantly associated with having a detectable skin exposure sample (OR 1.34, 0.97–1.84), but the analysis was limited by small number of samples and a direct correlation was not calculated (Pronk et al. 2006b). Specific IgE and atopy Specific IgE was measured using commercially available kits as previously described (Pronk et al. 2007; Jacobs et al. 2008).